參數(shù)資料
型號: HD151011
廠商: Hitachi,Ltd.
元件分類: 通用總線功能
英文描述: Dual BCD Programmable Counter with Synchronous Preset Enable(帶同步使能預(yù)置的可編程雙BCD計數(shù)器)
中文描述: 雙BCD碼可編程計數(shù)器的同步預(yù)置啟用(帶同步使能預(yù)置的可編程雙BCD碼計數(shù)器)
文件頁數(shù): 3/16頁
文件大小: 75K
代理商: HD151011
HD151011
3
Pin Arrangement
15
16
17
18
V
CC
1
2
3
4
5
6
7
14
CO
GND
(Top view)
8
13
19
20
J 0
(Test 1)*
J 1
J 2
J 3
J 4
J 5
J 6
9
10
J 7
12
11
(Test 2)*
C / T
CLK
CLK
Q
PR
SPE
CLR
* Pins 18 and 19 are for function test only and should be open.
Pin Description
Pin Name
Pin Description
Input pins
J0 to J7
C/
T
CLK,
CLK
Count data input for option
Level change input for CLK,
CLK
(CMOS level or TTL level)
Clock inputs
CLK : Rise edge trigger
CLK
: Fall edge trigger
SPE
Preset input for Jn data
PR
Preset input for D-type Flip Flop (Initialize "L" at Q output)
CLR
CO
Clear input for D-type Flip Flop (Initialize "H" at Q output)
Output pins
Output for BCD decimal counter
Q
Output for D-type Flip Flop
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