參數(shù)資料
型號: CDP1878C
廠商: Intersil Corporation
元件分類: 通用總線功能
英文描述: CMOS Dual Counter-Timer(CMOS 雙路計時器/定時器)
中文描述: CMOS雙反定時器(的CMOS雙路計時器/定時器)
文件頁數(shù): 11/13頁
文件大小: 61K
代理商: CDP1878C
4-101
FIGURE 11. TYPICAL CDP1802 INPUT/OUTPUT-MAPPED SYSTEM
CLOCK
CLEAR
TPA
MRD
TPB
N0
N1
N2
INT
XTAL
CDP1802
MEMORY
COUNTER - TIMER
DB0 - DB7
DATA BUS
ADDRESS
LINES
V
DD
RESET
TPA
RD
TPB/WR
A0
A1
A2
CS
IO/MEM
INT
TACL, TBCL
TBG
TAO
TAO
TBO
TBO
TAG
GATE
INPUTS
TIMER
OUTPUTS
FIGURE 12. CDP1800-SERIES INPUT/OUTPUT-MAPPING TIMING WAVEFORMS WITH OUTPUT INSTRUCTION
VALID DATA
DATA FROM MEMORY
TO COUNTER-TIMER
N LINES
RD
TPA
TPB/WR
DATA LATCHED
FIGURE 13. CDP1800-SERIES INPUT/OUTPUT-MAPPING TIMING WAVEFORMS WITH INPUT INSTRUCTION
VALID DATA
OUTPUT DRIVERS ENABLED
OUTPUT DRIVERS
DISABLED
DATA FROM
COUNTER-TIMER
TO MEMORY
RD
TPB/WR
TPA
N LINES
CDP1878C
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