W78E516DDG Datasheet, PDF (36/90 Pages) Nuvotem Talema – 8-BIT MICROCONTROLLER

W78E516D/W78E058D Data Sheet
ACC.7
Mnemonic: ACC
Bit Name
7-0 ACC
ACC.6
ACC.5
ACC.4
ACC.3
ACC.2
Function
The A or ACC register is the standard 8052 accumulator.
ACC.1
ACC.0
Address: E0h
B Register
Bit: 7
B.7
Mnemonic: B
Bit Name
7-0 B
6
5
4
3
2
1
0
B.6
B.5
B.4
B.3
B.2
B.1
B.0
Address: F0h
Function
The B register is the standard 8052 register that serves as a second accumulator.
Chip Enable Register
Bit: 7
6
5
4
3
2
1
0
CHPENR. CHPENR. CHPENR. CHPENR. CHPENR. CHPENR. CHPENR. CHPENR.
7
6
5
4
3
2
1
0
Mnemonic: CHPENR
Address: F6h
The CHPCON is read only by default .You must write #87,#59H sequentially to this special register
CHPENR to enable the CHPCON write attribute, and write other value to disable CHPCON write at-
tribute. This register protects from writing to the CHPCON register carelessly.
- 36 -