參數(shù)資料
型號(hào): MSM6242BGS
廠(chǎng)商: OKI ELECTRIC INDUSTRY CO LTD
元件分類(lèi): 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO24
封裝: 0.430 INCH, PLASTIC, SOP-24
文件頁(yè)數(shù): 6/18頁(yè)
文件大小: 177K
代理商: MSM6242BGS
Semiconductor
MSM6242B
36
TYPICAL APPLICATION INTERFACE WITH MSM6242B AND
MICROCONTROLLERS
D3
D2
D1
D0
A3
A2
A1
A0
CS0
ALE
RD
WR
AD3
AD2
AD1
AD0
A8 ~ A15
S1
S0
IO/M
ALE
RD
WR
8085
MSM6242B
Figure 15.
DECODER
D3
D2
D1
D0
A3
A2
A1
A0
CS0
ALE
RD
WR
A/D
A8 ~ A15
S1
S0
IO/M
RD
WR
8085
MSM6242B
I/O MAPPED
D3
D2
D1
D0
A3
A2
A1
A0
RD
WR
A4 ~ A15
IORQ
MREQ
RD
WR
Z80
MSM6242B
DECODER
VDD
G1
Figure 16.
MEMORY MAPPED
CS0
ALE
D3
D2
D1
D0
A3
A2
A1
A0
G2
D3
D2
D1
D0
A3
A2
A1
A0
RD
WR
ALE
RD
WR
MCS48
MSM6242B
DECODER
Figure 17.
CS0
ALE
BUS3
BUS2
BUS1
BUS0
BUS 4-7
A8 ~ A12
DECODER
Note : If 8085 does not enter into the state of HALT or HOLD during CS1 = "H" of
MSM6242B, R1 and R2 are not required.
Note : It depends upon the switching
characterisrics decided by a X'tal used
for a Z80 that either of IORQ and MREQ
is used.
R1
R2
R1
R2
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