SM59R09A5L25 参数 Datasheet PDF下载

SM59R16A5/SM59R09A5/SM59R05A5

8-Bit Micro-controller

64KB/36KB/20KB with ISP Flash

& 2KB RAM embedded

1.4.

1.4.1.

RESET

Hardware RESET function

SM59R16A5 provides on-chip hardware RESET mechanism, the reset duration is programmable by writer or ISP。

Internal Reset time

25ms (default)

200ms

100ms

50ms

16ms

8ms

4ms

1.4.2.

Software RESET function

SM59R16A5 provides one software reset mechanism to reset whole chip. To perform a software reset, the firmware must

write three specific values 55h, AAh and 5Ah sequentially to the TAKEY register to enable the Software Reset register

(SWRES) write attribute. After SWRES register obtain the write authority, the firmware can write FFh to the SWRES

register. The hardware will decode a reset signal that “OR” with the other hardware reset. The SWRES register is

self-reset at the end of the software reset procedure.

Mnemonic

TAKEY

SWRES

1.4.3.

Description

Time Access Key

register

Software Reset

register

Direct

F7h

E7h

Bit 7

Bit 6

Bit 5

Bit 4

Software Reset function

Bit 3

Bit 2

Bit 1

Bit 0

RESET

00H

00H

TAKEY [7:0]

SWRES [7:0]

Time Access Key register (TAKEY)

Mnemonic: TAKEY

7

6

5

4

3

TAKEY [7:0]

2

1

Address: F7H

0

Reset

00H

Software reset register (SWRES) is read-only by default; software must write three specific values

55h, AAh and 5Ah sequentially to the TAKEY register to enable the SWRES register write attribute. That

is:

MOV TAKEY, #55h

MOV TAKEY, #AAh

MOV TAKEY, #5Ah

1.4.4.

Software Reset register (SWRES)

Mnemonic: SWRES

7

6

5

4

3

SWRES [7:0]

2

1

Address: E7H

0

Reset

00H

SWRES [7:0]: Software reset register bit. These 8-bit is self-reset at the end of the reset procedure.

SWRES [7:0] = FFh, software reset.

SWRES [7:0] = 00h ~ FEh, MCU no action.

Specifications subject to change without notice contact your sales representatives for the most recent information.

ISSFD-M047

16

Ver.G SM59R16A5 01/2014