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hs0007tcu01hep3 notes on connecting the h8/38024f and h8/38004f separate document for tiny/slp e7 emulator user?s manual rej11b0004-0100z rev. 1.0 03/27/03 renesas technology corp.

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high-performance embedded workshop users manual i contents section 1 connecting the e7 emulator with the user system...........................1 section 2 pin arrangement of the e7 connector...............................................3 section 3 example of emulator connection......................................................5 section 4 differences between the mcus and the emulator.............................9
high-performance embedded workshop users manual ii
high-performance embedded workshop users manual 1 section 1 connecting the e7 emulator with the user system before connecting an e7 emulator (hereafter referred to as emulator) with the user system, a connector must be installed in the user system so that an user system interface cable can be connected. when designing the user system, refer to the connector and recommended circuits shown in this manual. before designing the user system, be sure to read the e7 emulator users manual and the hardware manual for related mcus. connect pins 2, 4, 6, 10, 12, and 14 of the user system connector to gnd firmly on the pcb. these pins are used as electrical gnd and to monitor the connection of the user system connector. note the pin arrangement of the user system connector. user system interface cable connector user system tab pin 1 pin 2 figure 1.1 connecting the user system interface cable to the user system notes: 1. the pin number assignment of the 14-pin connector differs from that of the e10a emulator; however, the physical location is the same. 2. when the connector is used, do not install any components within 3 mm of the connector.
high-performance embedded workshop users manual 2
high-performance embedded workshop users manual 3 section 2 pin arrangement of the e7 connector figure 2.1 shows the pin arrangement of the connector. pin 1 mark pin 1 mark top view connector 1 pin 2 pin 13 pin 14 pin pin no. signal of h8/38024f or h8/38004f 1 2 3 4 5 6 7 8 9 10 11 12 13 14 note: the slash (/) means that the signal is active-low. p33 vss n.c. vss p35 vss p95 vcc n.c. vss p34 vss /res* vss figure 2.1 pin arrangement of the connector
high-performance embedded workshop users manual 4
high-performance embedded workshop users manual 5 section 3 example of emulator connection *: open-collector buffer connector 14 pins with a 2.54-mm pitch pulled up at 4.7 k w or more user system user logic h8/38024f or h8/38004f vcc vcc p95 vcc p95 p34 p35 p33 /res vss vcc vcc vcc vcc p34 p35 p33 /res * pulled up at 4.7 k w or more figure 3.1 example of emulator connection
high-performance embedded workshop users manual 6 notes: 1. p33 to p35 pins are used by the emulator. pull up and connect the emulator and mcu pins. p33 to p35 4.7 k w user system connector pins 1, 5, and 11 h8/38024f or h8/38004f vcc figure 3.2 connection of emulator and p33 to p35 pins 2. the p95 pin is used for forced break control by the emulator. connect the emulator and mcu pins directly. user system connector pin 7 p95 pin 4.7 k w vcc h8/38024f or h8/38004f figure 3.3 connection of emulator and p95 pin 3. the /res pin is used by the emulator. create the following circuit by connecting the open-collector output buffer so that reset input can be accepted from the emulator: example of reset circuit user system connector pin 13 /res pin user logic *open-collector output buffer 4.7 k w * vcc h8/38024f or h8/38004f figure 3.4 example of a reset circuit 4. connect vss and vcc with the vss and vcc of the mcu, respectively. 5. connect nothing with n.c.
high-performance embedded workshop users manual 7 6. the input voltage, vcc, must be connected to the user system vcc (power supply). the amount of voltage permitted to input to vcc must be within the guaranteed range of the microcomputer. 7. figure 3.5 shows the interface circuit in the emulator. use this figure as a reference when determining the pull-up resistance value. hd74lv125a hd74lvc244 vcc p33 p34 p35 p95 8 1 11 5 7 13 22 22 22 22 22 emulator control circuit note: the power of hd74lv125a is supplied from vcc in the user connector. user connector 10 k x 3 10 k x 2 /res figure 3.5 interface circuit in the emulator (reference)
high-performance embedded workshop users manual 8
high-performance embedded workshop users manual 9 section 4 differences between the mcus and the emulator 1. when the emulator system is initiated, it initializes the general registers and part of the control registers as shown in table 4.1. table 4.1 register initial values at emulator power-on register initial value pc reset vector value in the vector address table r0 to r6 h0000 r7 h'0010 ccr h80 2. low-power mode during a user program break, the cpu operating frequency is forced to a system clock ( f ) for high-speed operation. 3. res signal the mcu signals are only valid during user program execution started with clicking the go or step-type button. during a user program break, the res signal is not sent to the mcus. note: do not start user program execution or access the memory while control input signal ( res ) is being low. a timeout error will occur. 4. system control register in the emulator, the internal i/o registers can be accessed from the [i/o] window. however, be careful when accessing the system control register. the emulator saves the register value of the system control register at a break and returns the value when the user program is executed. since this is done during a break, do not rewrite the system control register in the [i/o] window. 5. memory access during emulation if the memory contents are referenced or modified during emulation, realtime emulation cannot be performed because the user program is temporarily halted. 6. the emulator communicates with the mcus by using the res, p33 to p35, and p95 pins. these pins except for res cannot be used. 7. the power consumed by the mcu can reach several ma. this is because the user power supply drives one hd74lv125a to make the communication signal level match the user- system power-supply voltage. the power consumed rises little during user program execution since the emulator does not perform communication; it rises more during a break.
high-performance embedded workshop users manual 10 8. program area for the emulator do not access a part of areas in the flash memory or the internal ram since the emulator program uses these areas. if the contents of the program area for the emulator are changed, the emulator will not operate normally. in this case, restart the emulator with the download emulator firmware mode. table 4.2 program area for the e7 emulator mode program area h8/38024f h8/38004f flash memory: h7000 to h7fff internal ram: hf780 to hfb7f vector, etc.: h0002 to h0007, h0014 to h0015, h7ff8 to h7ff9 9. the emulator uses a two-word stack pointer for values stored on a user program break. therefore, the stack area must accept two-word addresses. 10. do not use an mcu that has been used for debugging. if the flash memory is rewritten many times, data may be lost due to retention problems after the emulator has been left for a few days and the data will be erased. if an error message is displayed, exchange the mcu for a new one.

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