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TMP86FS27FG

CMOS 8-Bit Microcontroller

Toshiba 

TMP86FS27

Operation

This section describes the functions and basic operational blocks of TMP86FS27.

The TMP86FS27 has flash memory in place of the mask ROM which is included in the

TMP86CM27/P27. The configuration and function are the same as the TMP86C847/H47.

1. Operating Mode

The TMP86FS27 has MCU mode and serial PROM mode.

1.1 MCU Mode

The MCU mode is set by fixing the TEST pin to the low level.

In the MCU mode, the operation is the same as the TMP86CM27/P27 (TEST pin cannot be used

open because it has no built-in pull-down resistor).

1.1.1

Program memory

The TMP86FS27 has a 60-Kbyte built-in flash memory (addresses 1000H to FFFFH in the

MCU mode).

When using TMP86FS27 for evaluation of TMP86CM27/P27, the program is written by the

serial PROM mode.

0000H

0000H

4000H

4000H

FFFFH

Program

TMP86CP27

FFFFH

Program

MCU mode

TMP86FS27

(a) ROM Size = 48 Kbytes

0000H

0000H

8000H

8000H

FFFFH

Program

TMP86CM27

FFFFH

Program

MCU mode

TMP86FS27

(b) ROM Size = 32 Kbytes

Figure 1.1.1 Program Memory Area

Note: The area that is not in use should be set data to FFH.

86FS27-6

2007-08-07

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