W79E217A Datasheet, PDF (54/207 Pages) Winbond – 8-bit Microcontroller

Preliminary W79E217A Data Sheet
Continued
BIT NAME
4-3 RS.1-0
2 OV
1 F1
0P
FUNCTION
Register bank selects bits:
RS1 RS2 Register Bank Address
000
00-07h
011
08-0Fh
102
10-17h
113
18-1Fh
Overflow flag. Set when a carry was generated from the seventh bit but not from
the 8th bit as a result of the previous operation or vice-versa.
User Flag 1. General purpose flag that can be set or cleared by the user by
software.
Parity flag. Set/cleared by hardware to indicate odd/even number of 1's in the
accumulator.
PWMP COUNTER HIGH BITS REGISTER
Bit:
7
6
5
4
3
2
1
0
-
-
-
-
PWMP.11 PWMP.10 PWMP.9 PWMP.8
Mnemonic: PWMPH
Address: D1h
BIT
NAME
FUNCTION
7-4 -
Reserved.
3-0 PWMP.11~PWMP.8 The PWM Counter Register bits 11~8.
PWM 0 HIGH BITS REGISTER
Bit:
7
6
5
-
-
-
Mnemonic: PWM0H
4
-
3
2
1
0
PWM0.11 PWM0.10 PWM0.9 PWM0.8
Address: D2h
BIT
NAME
FUNCTION
7~4 -
Reserved.
3~0 PWM0.11 ~PWM0.8 The PWM 0 Register bit 11~8.
NVM DATA
Bit:
7
6
5
4
3
2
1
0
NVMDAT.7 NVMDAT.6 NVMDAT.5 NVMDAT.4 NVMDAT.3 NVMDAT.2 NVMDAT.1 NVMDAT.0
Mnemonic: NVMDAT
Address: D3h
BIT
NAME
FUNCTION
7~0 NVMDAT.7~NVMDAT.0 The NVM data write register. The read NVM data is by MOVX instruction.
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Publication Release Date: December 14, 2007
Revision A3.0