參數(shù)資料
型號(hào): LC737212M
廠商: Sanyo Electric Co.,Ltd.
英文描述: Telephone Dialer IC with On-Chip Memory for Push- Button Telephones
中文描述: 電話撥號(hào)集成電路片上推內(nèi)存按鈕電話
文件頁(yè)數(shù): 8/27頁(yè)
文件大?。?/td> 308K
代理商: LC737212M
No. 5203-8/27
LC737212, 737212M
Pin Functions
Pin No.
Symbol
Function
1
C5
Column input
2
R1
3
R2
4
R3
Row input
5
R4
6
R5
7
SOUT-ENA
Serial output enable, H: enable, L: disable
8
HOLD-OFF IN
Hold mode clear input; falling edge detection.
9
ON-HOOK DIAL IN
On-hook dialing input; falling edge detection
10
SI/KEY
Serial input/keypad input switching
11
ON-HOOK
Hook-switching input
12
DPR
Dialing pulse rate switching; H: 20 pps, L: 10 pps
13
R/T
Pulse/tone switching; H:pulse, L: tone
14
BMR
Make percentage switching input; H: 33%, L: 39%
15
XIN
Oscillator circuit. Connect either a crystal or ceramic oscillator element with a
frequency of 3.58 MHz between these pins.
16
XOUT
17
OFF/ON-HOOK STORE
Off-hook store/on-hook store switching
18
V
DD
V
SS
SP-CTL
Power supply
19
20
Speaker reception control output; complementary output
21
DTMF
DTMF output; npn emitter-follower output
22
MUTE2
DTMF mute output; n-channel open drain output
23
MUTE1
DP and K-TONE muting output; n-channel open drain output
24
S-OUT
Serial data output; n-channel open drain output
25
DP
Dialing pulse output; n-channel open drain output
26
K-TONE
K-tone output; complementary output
27
HOOK-CTL
Hook control output; complementary output
28
HOLD-OUT
Hold mode output; complementary output
29
DISCON IN
Disconnect input
30
C1
31
C6
32
C7
33
C2
Column inputs
34
C8
35
C3
36
C4
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