W83C553FY-G Nuvoton Technology Corporation of America, W83C553FY-G Datasheet - Page 96
W83C553FY-G
Manufacturer Part Number
W83C553FY-G
Description
Manufacturer
Nuvoton Technology Corporation of America
Datasheet
1.W83C553FY-G.pdf
(149 pages)
Specifications of W83C553FY-G
Lead Free Status / RoHS Status
Compliant
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W83C553F
Counter Status Register
Function:
Type:
Bit Description:
WINBOND SYSTEMS LABORATORY
Bit 7:
Bit 6:
Bits [5:4]:
Bits [3:1]:
Bit 0:
Each counter's status byte can be read following a timer Read Back command, as programmed in the
Timer Control Register (43h).
Read back
OUT. Count Out Status. This bit indicates the Counter Out pin state. When set to "1", the
OUT pin of the counter is also a "1". When set to "0", the OUT pin of the counter is also a "0".
NULLCOUNT.
R/W. Read/Write Selection Status. These bits reflect the read/write selection made through
bits [5:4] of the control register. The binary codes returned, during the status read, match the
codes used to program the counter read/write selection.
M. The Mode Selection Status bits return the counter mode programming. The binary code
returned matches the code used to program the counter mode, as listed under the bit function
above.
BCD. The countdown method is binary when this bit is "0", and Binary Coded Decimal (BCD)
when this bit is "1".
Bit 5
Bit 3
0
0
1
1
0
0
x
x
1
1
Bit 4
Bit 2
0
1
0
1
0
0
1
1
0
0
Function
Counter Latch command
R/W Least Significant Byte (LSB)
R/W Most Significant Byte (MSB)
R/W LSB then MSB
Bit 1
0
1
0
1
0
1
Mode
0
1
2
3
4
5
Electrical Specifications
103
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