TMP86FS27FG datasheet(8/32 Pages) TOSHIBA

8 / 32 page

86FS27-8

2007-08-07

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

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.

Figure 2.2.1 Memory Address Maps

Parameter

Symbol

Min

Max

Unit

Operating voltage

VDD

4.5

5.5

High frequency

2, 4, 8, 16

MHz

Temperature

Topr

± 5

°C

64 bytes

61440 bytes

SFR

RAM

1024 bytes

128 bytes

0000H

003FH

0040H

0423H

0F80H

0FFFH

1000H

FFFFH

Flash memory

DBR

MCU

64 bytes

2048 bytes

SFR

RAM

1024 bytes

0000H

003FH

0040H

0423H

F800H

FFFFH

BOOT ROM

Serial PROM mode

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