CDP1877 View Datasheet(PDF) - Intersil
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Description
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CDP1877 Datasheet PDF : 10 Pages
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CDP1877, CDP1877C
Operating Conditions At TA = Full package temperature range. For maximum reliability, operating conditions should be selected so
that operation is always within the following ranges:
PARAMETER
DC Operating Voltage Range
Input Voltage Range
LIMITS
CDP1877
CDP1877C
MIN
MAX
MIN
MAX
4
10.5
4
6.5
VSS
VDD
VSS
VDD
UNITS
V
V
TPA
CS
CS
CA/AX
CA/AY
4-BIT
LATCH
TPB
MWR
MRD
DECODER
CS
WRITE PAGE REGISTER
WRITE CONTROL REGISTER
WRITE MASK REGISTER
READ STATUS REGISTER
READ POLLING REGISTER
CASC
READ
STATUS
REGISTER
WRITE
MASK
REGISTER
READ LONG BRANCH
INT
WRITE
PAGE
REGISTER
READ
LONG
BRANCH
EN CLEAR
EN
EN
IR7
IR6
INTERRUPT
LATCH/
STATUS
REGISTER
MASK
REGISTER
PRIORITY
ENCODER/
VECTOR
ADDRESS
GENERATION
HIGH
VECTOR
ADDRESS
LONG
BRANCH
INSTRUCTION
GENERATE
LOGIC
IR5
READ POLLING
REGISTER
IR4
IR3
EN
IR2
LOW
IR1
VECTOR
ADDRESS
IR0
CLEAR
CLEAR
INTERVAL
UPPER BITS
MWR MRD
BUS 0
BUS 1
DATA
BUS
BUFFERS
BUS 2
BUS 3
CONTROL REGISTER
WRITE
CONTROL
REGISTER
BUS 4
BUS 5
BUS 6
BUS 7
FIGURE 1. FUNCTIONAL DIAGRAM FOR CDP1877
4-84
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