參數(shù)資料
型號(hào): W78IRD2A
廠商: WINBOND ELECTRONICS CORP
元件分類(lèi): 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁(yè)數(shù): 25/76頁(yè)
文件大?。?/td> 646K
代理商: W78IRD2A
W78IRD2/W78IRD2A
Publication Release Date: February 14, 2007
- 25 -
Revision A9
BIT
NAME
FUNCTION
7
CY
Carry flag: Set when an arithmetic operation results in a carry being generated from
the ALU. It is also used as the accumulator for bit operations.
Auxiliary carry: Set when the previous operation resulted in a carry from the high
order nibble.
General–purpose, user-defined flag 0.
Register bank select bits: See below.
Register bank select bits: See below.
Overflow flag: Set when a carry was generated from the seventh bit but not from the
eighth bit as a result of the previous operation, or vice-versa.
General–purpose, user-defined flag 1.
Parity flag: Set and cleared by the hardware to indicate an odd or even number,
respectively, of 1's in the accumulator.
6
AC
5
4
3
F0
RS1
RS0
2
OV
1
F1
0
P
RS.1-0: Register bank select bits:
RS1
RS0
REGISTER BANK
ADDRESS
0
0
0
00-07h
0
1
1
08-0Fh
1
0
2
10-17h
1
1
3
18-1Fh
PCA Counter Control Register
Bit:
7
CF
6
5
-
4
3
2
1
0
CR
CCF4
CCF3
CCF2
CCF1
CCF0
Mnemonic: CCON Address: D8h
PCA Counter Mode Register
Bit:
7
6
5
-
4
-
3
-
2
1
0
CIDL
WDTE
CPS1
CPS0
ECF
Mnemonic: CMOD Address: D9h
PCA Module 0 Register
Bit:
7
-
6
5
4
3
2
1
0
ECOM0 CAPP0
CAPN0
MAT0
TOG0
PWM0 ECCF0
Mnemonic: CCAPM0 Address: DAh
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