RL78/D1A User's Manual: Hardware - Renesas

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Under development Preliminary document Specifications in this document are tentative and subject to change. RL78/D1A CHAPTER 28 FLASH MEMORY 28.1.1 Programming Environment The environment required for writing a program to the flash memory of the RL78/D1A is illustrated below. Host machine Figure 28-1. Environment for Writing Program to Flash Memory PG-FP5, FL-PR5 E1 VDD/EVDD/SMVDD RS-232C VSS/EVSS/SMVSS USB RESET Dedicated flash TOOL0 (dedicated single-line UART) memory programmer RL78/D1A A host machine that controls the dedicated flash memory programmer is necessary. To interface between the dedicated flash memory programmer and the RL78/D1A, the TOOL0 pin is used for manipulation such as writing and erasing via a dedicated single-line UART. 28.1.2 Communication Mode Communication between the dedicated flash memory programmer and the RL78/D1A is established by serial communication using the TOOL0 pin via a dedicated single-line UART of the RL78/D1A. Transfer rate: 1 M, 500 k, 250 k, 115.2 kbps Figure 28-2. Communication with Dedicated Flash Memory Programmer PG-FP5, FL-PR5 E1 Dedicated flash memory programmer VDD EMVDD GND RESETNote 1 , Note 2 /RESET Note 1 TOOL0 Note 2 SI/RxD VDD/EVDD/SMVDD R01UH0317EJ0004 Rev. 0.04 1163 Feb. 22, 2013 EVDD Note 3 VSS/EVSS/SMVSS/REGC RESET TOOL0 Notes 1. When using E1 on-chip debugging emulator. 2. When using PG-FP5 or FL-PR5. 3. Connect REGC pin to ground via a capacitor (default: 0.47 F). Caution Make EVDD, SMVDD the same potential as VDD. RL78/D1A
Under development Preliminary document Specifications in this document are tentative and subject to change. RL78/D1A CHAPTER 28 FLASH MEMORY The dedicated flash memory programmer generates the following signals for the RL78/D1A. See the manual of PG- FP5, FL-PR5, or E1 on-chip debugging emulator for details. PG-FP5, FL-PR5 Signal Name E1 on-chip debugging emulator Table 28-2. Pin Connection Dedicated Flash Memory Programmer RL78/D1A Connection I/O Pin Function Pin Name FLMD0 Output Mode signal VDD I/O VDD voltage generation/power monitoring VDD, EVDD, SMVDD GND Ground VSS, EVSS, SMVSS, REGC Note EMVDD Power monitoring of Driving power for TOOL pin CLK Output Clock output RESET Output RESET Output R01UH0317EJ0004 Rev. 0.04 1164 Feb. 22, 2013 EVDD Reset signal RESET TOOL0 I/O Transmit/receive signal TOOL0 SI/RxD I/O Transmit/receive signal SCK Output Transfer clock Note Connect REGC pin to ground via a capacitor (default: 0.47 F). Remark : Be sure to connect the pin. : The pin does not have to be connected. 28.2 Writing to Flash Memory by Using External Device (that Incorporates UART) On-board data writing to the internal flash memory is possible by using the RL78/D1A and an external device (a microcontroller or ASIC) connected to a UART. On the development of flash memory programmer by user, refer to the RL78 Microcontrollers (RL78 Protocol A) Programmer Edition Application Note (R01AN0815). 28.2.1 Programming Environment The environment required for writing a program to the flash memory of the RL78/D1A is illustrated below. Figure 28-3. Environment for Writing Program to Flash Memory External device (such as microcontroller and ASIC) VDD/EVDD/SMVDD VSS/EVSS/SMVSS RESET UART (TOOLTxD, TOOLRxD) TOOL0 RL78/D1A Processing to write data to or delete data from the RL78/D1A by using an external device is performed on-board. Offboard writing is not possible.
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User’s Manual 16 RL78/D1A 16-Bit
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NOTES FOR CMOS DEVICES (1) VOLTAGE
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Conventions Data significance: High
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RL78/D1A User’s Manual: Hardware
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