W79E201 Datasheet, PDF (19/87 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E201
ISP Address High Byte
Bit:
7
6
5
4
3
2
1
0
SFRAH.7 SFRAH.6 SFRAH.5 SFRAH.4 SFRAH.3 SFRAH.2 SFRAH.1 SFRAH.0
Mnemonic: SFRAH
Address: ADh
High byte destination address is for In System Programming operations. SFRAH and SFRAL address
are specific ROM bytes for erasure, programming or read.
ISP Data Buffer
Bit:
7
6
5
4
3
2
1
0
SFRFD.7 SFRFD.6 SFRFD.5 SFRFD.4 SFRFD.3 SFRFD.2 SFRFD.1 SFRFD.0
Mnemonic: SFRFD
Address: AEh
In ISP mode, read/write a specific byte ROM content must go through SFRFD register.
ISP Operation Modes
Bit:
7
6
-
WFWIN
Mnemonic: SFRCN
5
OEN
4
CEN
3
CTRL3
2
1
CTRL2 CTRL1
Address: AFh
0
CTRL0
BIT
NAME
FUNCTION
7
-
Reserve
6
WFWIN On-chip Flash EPROM bank select for in-system programming.
0: 16K bytes Flash EPROM bank is selected as destination for re-programming.
1: 4K bytes Flash EPROM bank is selected as destination for re-programming.
5
OEN Flash EPROM output is enabled.
4
CEN Flash EPROM chip is enabled.
3~0 CTRL[3:0] The flash control signals
ISP MODE
WFWIN NOE NCE CTRL<3:0>
Erase 4KB LD FLASH PROM
1
Erase 16K AP FLASH EPROM
0
Program 4KB LD FLASH
EPROM
1
Program 16KBAP FLASH
EPROM
0
Read 4KB LD FLASH EPROM
1
Read 16KB AP FLASH
EPROM
0
1
0
1
0
1
0
1
0
0
0
0
0
0010
0010
0001
0001
0000
0000
SFRAH,
SFRAL
X
X
Address in
Address in
Address in
Address in
SFRFD
X
X
Data in
Data in
Data out
Data out
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Publication Release Date: December 16, 2004
Revision A2