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参数资料
| 型号： | MSM58321RS |
| 厂商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDIP16 |
| 封装： | 0.300 INCH, PLASTIC, DIP-16 |
| 文件页数： | 14/16页 |
| 文件大小： | 121K |
| 代理商： | MSM58321RS |
Semiconductor
MSM58321
13
1
PIN DESCRIPTION
Name
Pin No.
Description
CS2
CS1
WRITE
13
2
Chip select pins. These pins enable the interface with the external circuit when
both of these pins are set at H level simultaneously.
If one of these pins is set at L level, STOP, TEST, WRITE, READ, ADDRESS
WRITE pins and D0 ~ D3 pins are inactivated.
Since the threshold voltage VT for the CS1 pin is higher than that for other pins,
it shuold be connected to the detector of power circuit and peripherals and CS2
is to be connected to the microcontroller.
WRITE pin is used to write data; it is activated when it is at the H level. Data bus
data inside the IC is loaded to the object digit while this WRITE pin is at the H
level, not at the WRITE input edge. Refer to Figure 1 below.
SR
Q
SR
Q
D0
D3
(S1 digit)
WRITE
D0
D1
D2
D3
DATA BUS
S1
CS1 = CS2 = "H"
D0
H
S1
WRITE
F/F D0-
θ
Figure 1
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