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CDP1878CD Datasheet(PDF) 4 Page - Intersil Corporation

Part # CDP1878CD
Description  CMOS Dual Counter-Timer
PDF  13 Pages
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CDP1878CD Datasheet(HTML) 4 Page - Intersil Corporation

  CDP1878CD Datasheet HTML 1Page - Intersil Corporation CDP1878CD Datasheet HTML 2Page - Intersil Corporation CDP1878CD Datasheet HTML 3Page - Intersil Corporation CDP1878CD Datasheet HTML 4Page - Intersil Corporation CDP1878CD Datasheet HTML 5Page - Intersil Corporation CDP1878CD Datasheet HTML 6Page - Intersil Corporation CDP1878CD Datasheet HTML 7Page - Intersil Corporation CDP1878CD Datasheet HTML 8Page - Intersil Corporation CDP1878CD Datasheet HTML 9Page - Intersil Corporation Next Button
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4-94
REGISTER TRUTH TABLE
ADDRESS
ACTIVE
REGISTER COUNTER
A2
A1
A0
TPB/WR
RD
1
1
0
X
Write Counter A MSB
1
1
0
X
Read Counter A MSB
0
1
0
X
Write Counter A LSB
0
1
0
X
Read Counter A LSB
1
0
0
X
Control Register A
1
1
1
X
Write Counter B MSB
1
1
1
X
Read Counter B MSB
0
1
1
X
Write Counter B LSB
0
1
1
X
Read Counter B LSB
1
0
1
X
Control Register B
1
0
0
X
Interrupt Status Register
101
X
0
0
0
Not Used
0
0
1
Not Used
Programming Model
COUNTER A REGISTERS
COUNTER B REGISTERS
INTERRUPT STATUS REGISTER
BUS 7
WRITE ONLY
BUS 0
CONTROL REGISTER
READ ONLY
HOLDING REGISTER LSB
HOLDING REGISTER MSB
WRITE ONLY
JAM REGISTER LSB
JAM REGISTER MSB
BUS 7
WRITE ONLY
BUS 0
CONTROL REGISTER
READ ONLY
HOLDING REGISTER LSB
HOLDING REGISTER MSB
WRITE ONLY
JAM REGISTER LSB
JAM REGISTER MSB
BUS 7
READ ONLY
BUS 0
TIMER A
TIMER B
X
X
000000
CDP1878C



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