TMP86FS49AFG Toshiba Semiconductor, TMP86FS49AFG Datasheet - Page 249

• Manufacturer Part Number: TMP86FS49AFG
• Description: 8-Bit Microcontroller
• Manufacturer: Toshiba Semiconductor

20. Serial PROM Mode
20.1 Outline
20.2 Memory Mapping
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BOOTROM is available in the serial PROM mode, and controlled by TEST, BOOT and
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 20-1 shows memory address mapping in the serial PROM mode.
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 20-1 (For detail of banks and control register, refer to the
chapter of “Flash Memory Control Register”.)
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.
The TMP86FS49AFG has a 2048 byte BOOTROM (Mask ROM) for programming to flash memory. The
Note: Though included in above operating range, some of high frequencies are not supported in the serial PROM mode. For
The Figure 20-1 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
Flash memory
details, refer to “Table 20-5”.
BOOTROM
Table 20-1 Operating Range in the Serial PROM Mode
Power supply
High frequency (Note)
RAM
DBR
SFR
Parameter
003FH
0FFFH
7FFFH
FFFFH
0000H
0040H
083FH
0F80H
7800H
8000H
9000H
28672 bytes
Serial PROM mode
(BANK0)
Figure 20-1 Memory Address Maps
2048 bytes
2048 bytes
128 bytes
64 bytes
32768 bytes
(BANK1)
Min
4.5
2
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Flash memory
RAM
DBR
SFR
Max
5.5
16
0FFFH
7FFFH
FFFFH
0000H
003FH
0040H
1000H
8000H
083FH
0F80H
61440 bytes
MCU mode
2048 bytes
128 bytes
64 bytes
RESET
MHz
Unit
V
TMP86FS49AFG
pins. Communica-