TMP86FS27 Просмотр технического описания (PDF) - Toshiba

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TMP86FS27

CMOS 8-Bit Microcontroller

Toshiba 

TMP86FS27

2. Serial PROM Mode

2.1 Outline

The TMP86FS27 has a 2-Kbyte BOOT ROM for programming to flash memory. This BOOT ROM

is a mask ROM that contains a program to write the flash memory on-board. The BOOT ROM is

available in a serial PROM mode and it is controlled by TEST pin and RESET pin and P00 and P01

pin, and is communicated with UART. There are four operation modes in a serial PROM mode:

flash memory writing mode, RAM loader mode, flash memory SUM output mode and product

discrimination code output mode. Operating area of serial PROM mode differs from that of MCU

mode. The operating area of serial PROM mode shows in Table 2.1.1.

Table 2.1.1 Operating Area of Serial PROM Mode

Parameter

Operating voltage

High frequency

Temperature

Symbol

VDD

fc

Topr

Min

Max

4.5

5.5

2, 4, 8, 16

25 ± 5

Unit

V

MHz

°C

2.2 Memory Mapping

The BOOT ROM is mapped in address F800H to FFFFH. The BOOT ROM can’t be accessed in

MCU mode. The Figure 2.2.1 shows a memory mapping.

0000H

SFR

003FH

0040H

RAM

0423H

DBR

0F80H

0FFFH

1000H

64 bytes

1024 bytes

128 bytes

0000H

SFR

003FH

0040H

RAM

0423H

64 bytes

1024 bytes

Flash memory

61440 bytes

FFFFH

MCU

BOOT ROM

F800H

FFFFH

2048 bytes

Serial PROM mode

Figure 2.2.1 Memory Address Maps

86FS27-8

2007-08-07

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