參數(shù)資料
型號(hào): CDP1878C
廠商: Intersil Corporation
元件分類: 通用總線功能
英文描述: CMOS Dual Counter-Timer(CMOS 雙路計(jì)時(shí)器/定時(shí)器)
中文描述: CMOS雙反定時(shí)器(的CMOS雙路計(jì)時(shí)器/定時(shí)器)
文件頁(yè)數(shù): 10/13頁(yè)
文件大小: 61K
代理商: CDP1878C
4-100
CLOCK
CLEAR
MWR
MRD
TPA
MAO
MA1
MA2
MA7
INT
XTAL
CDP1802
MEMORY
COUNTER - TIMER
DB0 - DB7
DATA BUS
ADDRESS
LINES
V
SS
RESET
TPB/WR
RD
TPA
A0
A1
A2
CS
IO/MEM
INT
TACL, TBCL
TBG
TAO
TAO
TBO
TBO
TAG
GATE
INPUTS
TIMER
OUTPUTS
FIGURE 8. TYPICAL CDP1802 MEMORY-MAPPED SYSTEM
LATCH HIGH-ORDER
ADDRESS FOR CS
HIGH BYTE
LOW BYTE
DATA LATCHED
VALID DATA
DATA FROM CPU
TO COUNTER-TIMER
TPB/WR
ADDRESS
TPA
FIGURE 9. CDP1800-SERIES MEMORY-MAPPING WRITE CYCLE TIMING WAVEFORMS
FIGURE 10. CDP1800-SERIES MEMORY-MAPPING READ CYCLE TIMING WAVEFORMS
HIGH BYTE
LOW BYTE
VALID DATA
OUTPUT DRIVERS
ENABLED
DISABLED
DATA FROM
COUNTER-TIMER
RD
ADDRESS
TPA
TO CPU
CDP1878C
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