MSM6242B Просмотр технического описания (PDF) - Oki Electric Industry
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MSM6242B Datasheet PDF : 18 Pages
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MSM6242B
FUNCTIONAL BLOCK DIAGRAM
¡ Semiconductor
32.768KHz
D3
D2
D1
D0
WR
RD
A3
A2
A1
A0
CS0
ALE
CS1
XT
XT OSC
1 Hz
COUNTER
RESET STOP 30 ADJ HOLD BUSY
bit bit bit
bit bit
30 sec
ADJ bit
S1 S10
MI1 MI10
24/12bit
H1 H10
W
D1 D10
MO1MO10
Y1 Y10
S1
64Hz
1-sec carry
S
CD
CE
CF 1-min carry
CF
1-hour carry
• S1~W~Y10 are time counter register
• C0~CF are control register
STDP
PIN CONFIGURATION
STD.P 1
CS0 2
ALE 3
A0 4
A1 5
A2 6
A3 7
RD 8
GND 9
18 VDD
17 XT
16 XT
15 CS1
14 D0
13 D1
12 D2
11 D3
10 WR
18 pin Plastic DIP
STD.P
1
CS0
2
NC
3
ALE
4
A0
5
NC
6
A1
7
NC
8
A2
9
A3
10
RD
11
GND
12
24
VDD A0-A3:
Address input
23
XT D0-D3:
Data input/output
22
XT CSO , CS1: CHIP SELECTS 0,1
21
NC RD:
READ enable
20
CS1 WR:
WRITE enable
19
D0 ALE:
Address latch enable
18
NC STD.P: Standard pulse output
17
NC XT, XT: XTAL oscillator input/output
16
D1 VDD:
+5V supply
15
D2
VSS:
ground
14
D3
13
WR
24 pin Plastic Small Outline
Package
24
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