W78ERD2 Datasheet, PDF (24/72 Pages) Winbond – 8-BIT MICROCONTROLLER

W78ERD2
BIT
NAME
FUNCTION
5, 4 P43CMP1 Chip-select signals address comparison:
P43CMP0 00: Compare the full address (16 bits length) with the base address register
P43AH, P43AL.
01: Compare the 15 high bits (A15 − A1) of address bus with the base
address register P43AH, P43AL.
10: Compare the 14 high bits (A15 − A2) of address bus with the base
address register P43AH, P43AL.
11: Compare the 8 high bits (A15 − A8) of address bus with the base
address register P43AH, P43AL.
3, 2 P42FUN1 The P4.2 function control bits which are the similar definition as P43FUN1,
P42FUN0 ^P43FUN0.
1, 0 P42CMP1 The P4.2 address comparator length control bits which are the similar
P42CMP0 ^{definition as P43CMP1, P43CMP0.}
F/W Flash Low Address
Bit:
7
6
5
4
3
2
1
0
Mnemonic: SFRAL
F/W flash low byte address
Address: C4h
F/W Flash High Address
Bit:
7
6
5
4
3
2
1
0
Mnemonic: SFRAH
F/W flash high byte address
Address: C5h
F/W Flash Data
Bit:
7
6
5
4
3
2
1
0
Mnemonic: SFRFD
F/W flash data
Address: C6h
- 24 -