W79E532A Datasheet, PDF (18/78 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E532A/W79L532A
A16
DCP12
DCP11
DCP10
P1.0
0
0
0
P1.1
0
0
1
P1.2
0
1
0
P1.3
0
1
1
P1.4
1
0
0
P1.5
1
0
1
P1.6
1
1
0
P1.7
1
1
1
ISP Address Low Byte
Bit:
7
6
5
4
3
2
1
0
A7
A6
A5
A4
A3
A2
A1
A0
Mnemonic: SFRAL
Address: ACh
Low byte destination address for In System Programming operation. SFRAH and SFRAL address a
specific ROM byte for erasure, programming or read.
ISP Address High Byte
Bit:
7
6
5
4
3
2
1
0
A15 A14 A13 A12 A11 A10
A9
A8
Mnemonic: SFRAH
Address: ADh
High byte destination address for In System Programming operation. SFRAH and SFRAL address a
specific ROM byte for erasure, programming or read.
ISP Data Buffer
Bit:
7
6
5
4
3
2
1
0
D7
D6
D5
D4
D3
D2
D1
D0
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
5
BANK WFWIN NOE
4
3
2
1
0
NCE CTRL3 CTRL2 CTRL1 CTRL0
Mnemonic: SFRCN
Address: AFh
BANK: Select APFlash banks for ISP. Set it 1 access to APFlash1, clear it to APFlash0.
WFWIN: Destination ROM bank for programming, erasure and read. 0 = APFlashx, 1 = LDFlash.
NOE: Flash EPROM output enable.
NCE: Flash EPROM chip enable.
CTRL[3:0]: Mode Selection.
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