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| Ordering number : EN*5560B CMOS LSI LC19001A010 Digitizer Controller Preliminary Overview The LC19001A010 provides rapid and precise position detection for the resistive membrane pressure-sensitive digitizers used in PDAs and other portable informationprocessing equipment. It implements, in a single chip, the coordinate readout processing required for pen input operations. This controller provides the following functions: digitizer voltage A/D conversion, noise exclusion, conversion to display coordinates, and data transfer to the host CPU. Package Dimensions unit: mm 3326-LQFP80 [LC19001A010] Features * Detects input coordinate values from resistive membrane pressure-sensitive digitizers at readout speeds up to 190 points per second using a 10-bit A/D converter. * Compact size, low power, and the 3.3 V power supply operation appropriate for PDAs and other portable information-processing equipment * Menu area registration, duplicate coordinate processing, and 4-byte packets reduce the host CPU processing load. * Logical exclusion of abnormal coordinates and averaging processing to remove both pen chattering noise and noise from the LCD system * Controller functions can be programmed by sending command data from the host CPU. SANYO: LQFP80 SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN O3096HA (OT) No. 5560-1/8 LC19001A010 Pin Assignment Block Diagram No. 5560-2/8 LC19001A010 Pin Functions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Pin UI UO NC NC NC NC NC NC MOD0 MOD1 X0 X1 VSS RSTX NC NC NC NC NC NC NC NC OUTPDWN NC NC NC OUTY0 OUTY1 OUTX0 OUTX1 NC CHK1 NC CHK2 NC CHK3 NC PDWIN T1 T2 T3 T4 In Out Out Out Out Out Out Out Out Out In In In Out Out Out Out In Out In Out In Out In In In In In In Pen down level detection Communication format setting input port 1 Communication format setting input port 2 Communication format setting input port 3 Communication format setting input port 4 Internal state verification output port 3 Internal state verification output port 2 Internal state verification output port 1 Digitizer electrode switching output: Y (Y0) Digitizer electrode switching output: Y (Y1) Digitizer electrode switching output: X (X0) Digitizer electrode switching output: X (X1) Pen down switch output port I/O In Out Out Out Out Out Out Out In In GND GND Clock oscillator connection Clock oscillator connection GND Reset input (active low) RS-232C receive data input (CMOS level) RS-232C send data output (CMOS level) Function Continued on next page No. 5560-3/8 LC19001A010 Continued from preceding page Pin No. 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Pin BR1 BR2 BR3 CK NC NC NC NC NC CHK4 VCC CHK5 RST_S VSS NC NC NC NC NC INT_PDW INT_S NC NC NC NC NC NC NC INY1 INY0 INX1 INX0 AVCC AVR AVSS NC NC NC In Out Out In Out Out In In In In In In In In In In In In In In In In GND GND GND GND Digitizer analog input: Y (Y1) Digitizer analog input: Y (Y0) Digitizer analog input: X (X1) Digitizer analog input: X (X0) Analog system power supply (A/D converter power supply) A/D converter reference voltage input Analog system ground (A/D converter ground) Pen down interrupt (level) Stop mode clear interrupt (Connect with UI) Out Out I/O In In In In In In In In In Out Internal state verification output port 4. (High in sleep or stop modes) Power supply Internal state verification output port 5 Reset notification signal GND Baud rate setting input port 1 Baud rate setting input port 2 Baud rate setting input port 3 Operating frequency setting input port (See the external switch settings) Function No. 5560-4/8 LC19001A010 Specifications Absolute Maximum Ratings Parameter Symbol VCC AVCC AVR VI VO1 IOL IOLAV IOL IOLAV IOH IOHAV IOH IOHAV Pd Ta Tstg -40 -55 The average value of (operating current x operating ratio) The average value of (operating current x operating ratio) The average value of (operating current x operating ratio) The average value of (operating current x operating ratio) Must not exceed VCC. *1 Must not exceed AVCC + 0.3 V. *2 *2 Conditions Rated value min VSS - 0.3 VSS - 0.3 VSS - 0.3 VSS - 0.3 VSS - 0.3 max VSS + 7.0 VCC + 0.3 VCC + 0.3 VCC + 0.3 VCC + 0.3 20 4 100 40 -20 -4 -50 -20 300 +85 +150 Unit V V V V V mA mA mA mA mA mA mA mA mW C C Supply voltage A/D converter reference input voltage Input voltage Output voltage Maximum low-level output current Average low-level output current Maximum total low-level output current Average total low-level output current Maximum high-level output current Average high-level output current Maximum total high-level output current Average total high-level output current Power dissipation Operating temperature Storage temperature Note: 1. The LC19001A010 must be used with AVCC and VCC at the same potential. Also, applications must assure that AVCC does not exceed VCC at power on. 2. VI and VO1 must not exceed VCC + 0.3 V. Recommended Conditions at AVSS = VSS = 0 V Parameter Symbol Conditions Guaranteed range for normal operation* Supply voltage A/D converter reference input voltage Operating temperature VCC AVR Ta RAM state retention in stop mode Rated value min 2.2* 1.5 0.0 -40 max 6.0* 6.0 AVCC +85 Unit V V V C Note: The guaranteed analog ranges vary with the frequency used. DC Standards at Ta = -40 to 85C Parameter Symbol ICC1 ICC2 ICCS1 Current drain ICCS2 ICCH IA IAH Input capacitance Cin AVCC Pins other than AVCC, AVSS, VCC and VSS VCC Pins Conditions VCC = 5.0 V VCC = 3.3 V VCC = 5.0 V VCC = 3.3 V Ta = 25C 3 1 Ratings min typ 12 max 20 12 7 1.5 1 4 Ta = 25C f = 1 MHz 10 1 Unit mA mA mA mA A mA A pF Operating frequency 10 MHz 8 MHz 10 MHz 8 MHz 8 MHz 8 MHz 10 MHz Normal Sleep mode Stop mode A/D converter active A/D converter stopped No. 5560-5/8 LC19001A010 Digitizer Controller Provisional Specifications Parameter Coordinate calculation method Interface Communication rates (transfer rates) Function Source data mode (Normalized data mode)* Serial communications 1200, 2400, 4800, 9600, 19200 (bps) Data length: 8 bits Parity: none, even, odd Stop bits: 1 or 2 Can be set to an arbitrary value. Initial value 10 MHz: 100 P/S 8 MHz: 80 P/S Description A/D converted data is sent to the host CPU. Normalized data is sent to the host CPU. Asynchronous serial communications External switches are used to set the initial communication rate. See the "External Switch Settings" charts. However, the LC19001A010 does not support 19200-bps communication at 8 MHz. The rate can be changed by command. External switches are used to set the initial communication format. See the "External Switch Settings" charts. 10 MHz: Maximum normalized data rate: 150 p/s Maximum source data rate: 190 p/s (When the baud rate is 19200) 8 MHz: Maximum normalized data rate: 120 p/s Maximum source data rate: 150 p/s (When the baud rate is 9600) Note: The above values apply when no menu area is registered. See the "Coordinate Data Format" charts. When the pen is down, coordinate values are output one point at a time. While the pen remains down, coordinate values are output continuously. 5-V drive 3.3-V drive Low power functions 140 mW (MAX) 52.8 mW (MAX) At a 10-MHz operating frequency, with the pen down At an 8-MHz operating frequency, with the pen down Sleep mode 35 mW (MAX) Stop mode 5 W (MAX) Operating frequency 10 MHz 8 MHz *Initial values Communication format Output rate (sampling rate) Coordinate data format Data output mode Power dissipation (chip) 4-byte binary Point (Stream)* * Events that recover from sleep mode: Pen down, reset, command reception * Events that recover from stop mode: Pen down, reset, stop clear command Chip power dissipation 5-V drive 3.3-V drive 4.95 mW (MAX) 3.3 W (MAX) Sleep: CPU operation is stopped, but all other circuits operate. Stop: The oscillator circuit is stopped. Methods for switching modes: There are two types of command that are used to switch to the low power modes as follows: Direct Direct: The LC19001A010 switches to the low power mode after the command is accepted. Auto Auto: After the last coordinate input, if there is no input for a preset time, the LC19001A010 switches to the low power mode. Transition times * Transition from normal mode to low power mode: about 5 s * Transition from low power mode to normal mode: Sleep mode: about 5 s Stop mode: The oscillator stabilization period plus 5 s Drive voltage Clock frequency Package Chip size (mm) A/D converter resolution 3.3 to 6 V 8 MHz, 10 MHz LQFP80 (SQFP80) 14 x 14 x 1.5 10-bit Linearity error: 2 LSB (5 V, 10 MHz operation) Linearity error: 2 LSB (3.3 V, 8 MHz operation) An 8 MHz clock frequency must be used when the drive voltage is 3.3 V. Continued on next page. No. 5560-6/8 LC19001A010 Continued from preceding page. Parameter Reset Function Hardware reset Software reset Power on reset Watchdog reset Status diagnostic function Control setting state verification Interface verification Menu area registration Matching positions Duplicate coordinates are not transmitted Description There are four types of reset: hardware reset, software reset, power on reset, and watchdog reset. Operation starts after the oscillator stabilization period has elapsed when stop mode is cleared and after a power on reset. A reset function operates automatically if the application software fails. Sends the controller's current state of the settings to the host CPU. Information sent includes the coordinate calculation method, the data output mode, and the output rate. Uses arbitrary data to verify whether communication between the controller and the host CPU is functioning normally. A menu area can be registered at an arbitrary location. Up to 24 menu items can be registered. Accepts A/D values and reference coordinate values from the host CPU for use in normalizing the A/D converted data and in matching positions. Compares the coordinate values transferred in the previous operation with the current coordinate data and if the coordinate values are the same (i.e., if they are duplicate coordinate values) the LC19001A010 does not send the current coordinate data. (Only valid in stream mode) If the required data was not received within the preset timeout time, the controller sends F3h to the host CPU. Normally set to be about 10% of the number of pixels. (only valid in normalized mode) Initial values: X = 64, Y = 48 If a lock command is issued, after transmitting the coordinate data currently being transmitted, the controller halts transmission. The lock state is cleared by sending a lock clear command. Interface diagnostic function Menu area function Reference value setup function Duplicate coordinate processing function Timeout function Noise exclusion function Sets the timeout time Sets the parameters used to reduce noise levels Starts and clears the lock function Lock function Coordinate Data Output Format: 4-byte structure bit 7 Ph 0 0 0 * Ph: * 0: 6 0 0 0 0 5 0 X9 0 Y9 4 P X8 0 Y8 3 X3 X7 Y3 Y7 2 X2 X6 Y2 Y6 1 X1 X5 Y1 Y5 0 X0 X4 Y0 Y4 First byte Second byte Third byte Fourth byte Phase bit, always set to 1. Zero bits, always cleared to 0. * X0 to X9: Horizontal axis value (X) as a binary value (X9 is the high-order bit) * Y0 to Y9: Vertical axis value (Y) as a binary value (Y9 is the high-order bit) * P: Pen status (pen down = 1, pen up = 0) - When the pen is in the up state, the LC19001A010 sends a single byte with the value 80 h. Menu Area Number Output Format: 1-byte structure bit 7 Ph * Ph: * 1: * 0: 6 1 5 0 4 M4 3 M3 2 M2 1 M1 0 M0 First byte Phase bit, always set to 1. One bit, always set to 1. Zero bit, always cleared to 0. * M0 to M4: Menu number M (range: 1 to 24) as a binary value (M4 is the high-order bit) - When the pen is in the up state, the LC19001A010 sends a single byte with the value 80 h. Note : Coordinate data and menu area data can be differentiated by inspecting bit 6. (See the data format descriptions above.) No. 5560-7/8 LC19001A010 External Switch Settings Operating frequency Pin No. Frequency (MHz) 10 8* 46 CK L H Note: Can not be used at 19200 bps. Communication speed (transfer rate) Mode 0 1 2 3 4 Pin No. Baud rate (bps) 1200 2400 4800 9600 19200 43 BR1 L H L L H 44 BR2 L L H L H 45 BR3 L L L H H Communication format Data length Pin No. Parity None Stop bits 1 2 1 8 bits Present Odd Even 2 1 2 39 T1 L L L L L L 40 T2 L L H H H H 41 T3 L L L L H H 42 T4 H L L H L H s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of October, 1996. Specifications and information herein are subject to change without notice. No. 5560-8/8 |
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