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TMP86FS23UG Datasheet(PDF) 207 Page - Toshiba Semiconductor |
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TMP86FS23UG Datasheet(HTML) 207 Page - Toshiba Semiconductor |
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207 / 252 page  Page 195 TMP86FS23UG 19. Serial PROM Mode 19.1 Outline The TMP86FS23UG has a 2048 byte BOOTROM (Mask ROM) for programming to flash memory. The BOOTROM is available in the serial PROM mode, and controlled by TEST, BOOT and RESET pins. Communica- tion is performed via UART. The serial PROM mode has seven types of operating mode: Flash memory writing, RAM loader, Flash memory SUM output, Product ID code output, Flash memory status output, Flash memory eras- ing and Flash memory read protection setting. Memory address mapping in the serial PROM mode differs from that in the MCU mode. Figure 19-1 shows memory address mapping in the serial PROM mode. Note: Though included in above operating range, some of high frequencies are not supported in the serial PROM mode. For details, refer to “Table 19-5”. 19.2 Memory Mapping The Figure 19-1 shows memory mapping in the Serial PROM mode and MCU mode. In the serial PROM mode, the BOOTROM (Mask ROM) is mapped in addresses from 7800H to 7FFFH. The flash memory is divided into two banks for mapping. Therefore, when the RAM loader mode (60H) is used, it is required to specify the flash memory address according to Figure 19-1 (For detail of banks and control register, refer to the chapter of “Flash Memory Control Register”.) Figure 19-1 Memory Address Maps Table 19-1 Operating Range in the Serial PROM Mode Parameter Min Max Unit Power supply 4.5 5.5 V High frequency (Note) 2 16 MHz To use the Flash memory writing command (30H), specify the flash memory addresses from 1000H to FFFFH, that is the same addresses in the MCU mode, because the BOOTROM changes the flash memory address. 003FH 0000H 64 bytes 2048 bytes 0040H 0FFFH 7800H 7FFFH 8000H 8000H 7FFFH FFFFH FFFFH SFR RAM DBR SFR RAM DBR BOOTROM Flash memory Serial PROM mode MCU mode 9000H 28672 bytes (BANK0) 32768 bytes (BANK1) 61440 bytes 003FH 0000H 64 bytes 0040H 0FFFH 1000H Flash memory 2048 bytes 128 bytes 128 bytes 083FH 0F80H 0F80H 2048 bytes 083FH |
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