参数资料
型号: MM58167BV
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: XO, clock
英文描述: Microprocessor Real Time Clock
中文描述: 0 TIMER(S), REAL TIME CLOCK, PQCC28
封装: PLASTIC, LCC-28
文件页数: 8/10页
文件大小: 173K
代理商: MM58167BV
Typical Applications
R1
e
20 M
X
g
20%
C1
e
6 pF
b
36 pF
R2 to be selected
based on crystal used.
TL/F/11070–8
Note 5:
A ground line or ground plane guard trace should be included between pins 9 and 10 to insure the oscillator is not disturbed by the address line.
FIGURE 5. Typical Connection Diagram
TL/F/11070–9
Note 6:
Must use 8238 or equivalent logic to insure advanced I/OW pulse; so that the ready output of the MM58167B is valid by the end of
w
2 during the T2
microcycle.
Note 7:
t
w
2
t
t
RS8080
a
t
DL8238
a
t
WRY58167B
.
FIGURE 6. 8080 System Interface with Battery Backup
8
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