ICM7170 Intersil Corporation, ICM7170 Datasheet - Page 12

• Manufacturer Part Number: ICM7170
• Description: Microprocessor-compatible, Real-time Clock
• Manufacturer: Intersil Corporation

Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate
and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
B23 IRQ5
B24 IRQ4
B25 IRQ3
B4 IRQ2
A11 AEN
A26 A5
A25 A6
A24 A7
A23 A8
A22 A9
A31 A0
A30 A1
A29 A2
A28 A3
A27 A4
INTERRUPT
S1
S2
S3
S4
S1
S2
S3
S4
SELECT
DSI
POSITIVE INTERRUPT
TP1
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
C2
C3
R1
X1
C1
1K
FIGURE 9. IBM PC INTERFACE FOR ICM7170Y
10
11
12
1
2
3
4
5
6
7
8
9
ICM7170
10
1
2
3
4
5
6
7
8
9
U2
74LS688
ICM7170
U3
12-16
24
23
22
21
20
19
18
17
16
15
14
13
20
19
18
17
16
15
14
13
12
11
R2
+
-
D1 OPTIONAL DIODE AND
RESISTOR SEE NOTE 8
B1
C5
SR2
C4
J1
10
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
74LS245
74LS139
U5
U1
18
17
16
15
14
13
12
20
19
11
16
15
14
13
12
11
10
9
5V B3.B29
GND B1.B31
D7 A2
D6 A3
D5 A4
D4 A5
D3 A6
D2 A7
D1 A8
D0 A9
C7
C6
IOR B14
IOW B13