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LC737212M の電気的特性と機能

LC737212MのメーカーはSanyo Semicon Deviceです、この部品の機能は「Telephone Dialer IC with On-Chip Memory for Push- Button Telephones」です。


製品の詳細 ( Datasheet PDF )

部品番号 LC737212M
部品説明 Telephone Dialer IC with On-Chip Memory for Push- Button Telephones
メーカ Sanyo Semicon Device
ロゴ Sanyo Semicon Device ロゴ 




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LC737212M Datasheet, LC737212M PDF,ピン配置, 機能
Ordering number : EN5203203
CMOS LSI
LC737212, LC737212M
Telephone Dialer IC with On-Chip Memory for Push-
Button Telephones
Overview
The LC737212 and LC737212M are CMOS LSI
telephone dialers for pushbutton telephones. They support
both DTMF and pulse dialing. These products include 25
16-digit memories for storing telephone numbers and one
63-digit memory for redialing, and they provide, in a
single chip, all the functions required for dialing and
control for a standard independent telephone, including
on-hook dialing and a hold function. They also provide a
serial I/O interface for connection to a microcontroller.
Functions
• Fabrication in a CMOS process that allows these circuits
to be directly operated from a telephone line
• Support for single-contact keypads
• Built-in oscillator circuit (fosc = 3.58 MHz) that can
drive either a standard color-TV crystal oscillator
element or a ceramic resonator
• High-precision DTMF signal
• Frequency generator circuit (±0.1%) adopted for eased
ceramic resonator selection
• Five one-touch 16-digit auto-dial memories and 20
quick-dialing memories
• On-hook or off-hook can be specified for memory
entries.
• Mode change and pause data items can be stored in the
dialing memories.
• 63-digit redial memory
• Automatic pause (3.9 seconds) insertion when the mode
is switched.
• Automatic pause (1.0 second) insertion after a flash
operation.
• Mode changing is one-directional, from pulse mode to
tone mode.
• Output of a key press tone (1036 Hz, 31 ms) for keys
other than DTMF keys when key input is valid
• Output of an operation complete confirmation tone
(2072 Hz, 279 ms for each telephone number) when a
telephone number is stored in memory
• Generates 12 signal types in DTMF mode.
• Supports an on-hook dialing mode.
• Supports a hold function with hold mode.
• Supports both 10 and 20 pps dialing pulse rates.
• The mode can be switched from either the P/T pin or by
a key input.
• Settable dialing pulse circuit closed ratio (make
percent): either 33% or 39%.
• Supports either keypad or serial input.
• Provides serial output of the keypad input data and the
internal status.
• Capable of controlling the serial output timing.
• Supports 18 user-defined keys.
• Wide operating power-supply voltage range
— Pulse mode: VDD = 1.5 to 5.5 V
— DTMF mode: VDD = 2.0 to 5.5 V
• Low power operation
— Pulse mode: IDD = 0.5 mA max (VDD = 3.0 V)
— DTMF mode: IDD = 1.0 mA max (VDD = 3.0 V)
• Low standby current
— IDR = 0.5 µA max (VDD = 1.0 V)
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
21398RM(OT) No. 5203-1/27

1 Page





LC737212M pdf, ピン配列
LC737212, 737212M
Electrical Characteristics at Ta = 25°C, fosc = 3.579545 MHz
Parameter
Operating current drain
Static current drain
Memory retention voltage
Memory retention current
Input pin current
Key pin current
Output pin leakage current
Output pin voltage
Symbol
IDDP
IDDT
IDD(ST)
VDR
IDR
IIH1
IIL1
IILK1
IILK2
IOLK1
IOLK2
IOFF
VOH1
VOH2
VOL1
VOL2
Conditions
Pulse output mode, outputs open, VDD = 3.0 V
DTMF output mode,outputs open, VDD = 3.0 V
Standby mode, outputs open, VDD = 1.5 to 5.5 V
Between VDD and VSS
VDD = 1 V
The SOUT-ENA, OFF-HOOK, DPR, P/T, BMR,
ON-HOOK-DIAL IN, HOLD-OFF IN, DISCON IN,
SI/KEY, OFF/ON-HOOK, and STORE pins, VIH = VDD
min
1
The SOUT-ENA, OFF-HOOK, DPR, P/T, BMR,
ON-HOOK-DIAL IN, HOLD-OFF IN, DISCON IN,
SI/KEY, OFF/ON-HOOK, and STORE pins, VIL = VSS
All key pins, VDD = 1.5 V, VILK = VSS
All key pins, VDD = 5.5 V, VILK = VSS
All key pins, VDD = 1.5 V, VOLK = 0.4 V
All key pins, VDD = 5.5 V, VOLK = 0.4 V
VO = VDD, VDD = 5.5 V, with the output off, the DP,
MUTE1, MUTE2, and S-OUT pins.
–1
–20
–300
200
0.7
The K-TONE, HOLD-OUT, HOOK-CTL,
and SP-CTL pins, VDD = 1.5 V, IOH = –250 µA
VDD – 0.5
The K-TONE, HOLD-OUT, HOOK-CTL,
and SP-CTL pins, VDD = 5.5 V, IOH = –1 mA
VDD – 1
The K-TONE, DP, MUTE1, MUTE2, SP-CTL,
HOLD-OUT, and HOOK-CTL pins, VDD = 1.5 V, IOL = 250 µA
The K-TONE, DP, MUTE1, MUTE2, SP-CTL,
HOLD-OUT, and HOOK-CTL pins, VDD = 5.5 V, IOL = 1 mA
typ
0.3
0.5
max Unit
0.5 mA
1 mA
1 µA
V
0.5 µA
1 µA
µA
µA
µA
µA
mA
1 µA
V
V
0.4 V
0.4 V
AC Characteristics at Ta = 25°C, fosc = 3.579545 MHz
Parameter
Key debounce time
Pin chatter exclusion time
Key scan frequency
Key tone frequency
Key tone output time
Auto-pause time
DTMF output time
DTMF interdigit pause time
Hooking time
Hooking pause time
Memory store confirmation
tone frequency
Memory store confirmation
tone output time
Low tone amplitude
Tone output ratio
Tone output distortion
Oscillator start time
Symbol
TKD
TPCHT
fKSC
fKT
TKT
TAP
TMFON
TMFOFF
THK
THKP
fKST
Conditions
OFF-HOOK, P/T, ON-HOOK-DIAL, IN HOLD OFF IN
In Pulse mode at 10 pps
In Pulse mode at 20 pps
DTMF mode
TKSTON
VOR
dBCR
DIS
TSTART
VDD = 3.5 V, RL = 10 k
VDD = 2.0 to 5.5 V, RL = 10 k
VDD = 2.0 to 5.5 V, RL = 10 k
VDD = 1.5 to 5.5 V
VDD = 3.0V
min
3.88
3.88
3.88
98
93
700
0.98
165
1
typ
30
45
258.9
1035.7
30.9
3.9
3.9
3.9
100
95
710
1.0
2071.4
278.1
200
2
1
max
3.93
3.93
3.93
102
97
720
1.02
Unit
ms
ms
HZ
HZ
ms
s
s
s
ms
ms
ms
s
Hz
ms
240 mVrms
3 dB
10 %
30 ms
ms
No. 5203-3/27


3Pages


LC737212M 電子部品, 半導体
LC737212, 737212M
Keypad Layout
R1 1 2 3
F 00 05 10 15
456
M 01 06 11 16
789
R/P 02 07 12 17
to
*
0
#
HOLD
03 08 13 A4
ON/OFF
R5 A1 A2 A3 STORE 04 09 14 A5
C1 to
C8
Key Matrix Functions (when the SOUT-ENA pin is high)
Digits 1 to 9, 0:
* and #:
F:
M:
R/P:
HOLD ON/OFF:
STORE:
A1 to A5:
00 to 17:
Dialing data
DTMF dialing data
In pulse mode, the * key switches the LC737212/M to DTMF mode.
Flash (0.71 second)
Quick-dialing address specification (only in the on-hook state, sets up memory store mode)
Redial, pause (3.9 seconds), clear the paused state
Controls the on/off state of hold mode
Sets up memory store mode.
One-touch dialing key
Definable function keys
The keypad is formed as a matrix using the key input pins (R1 to R5 and C1 to C8) and supports 40 keys. A given key is
input by shorting or grounding the column pin and the row pin for that key. To prevent discharge of the backup battery
due to inadvertent key presses in standby mode (when the circuit is disconnected from the telephone line), key input by
shorting is not accepted. This means that if on-hook storing of telephone numbers in memory is selected, the application
must implement STORE key (or M key) input by grounding the ROW pin and COLUMN pin.
• Digit keys (1 to 9 and 0)
— Dialing data keys
— Quick-dialing memory address specification keys
• * and # keys
— DTMF mode: The * and # keys function as dial data keys
— Pulse mode:
* ... Pulse/tone switching key
# ... Unused.
• F key (flash key)
Invokes an operation equivalent to 0.71-second hooking implemented by turning on the DP output for 0.71 second.
Although a 1-second pause is automatically inserted, the following dialing data may be entered during that period.
Redialing is possible after a flash operation.
• M key (memory key)
When on-hook memory registration is set up, the system switches from standby mode to memory registration mode
when the M key is pressed. The address of the dialing memory is specified by combination of the digit keys that are
pressed immediately after the M key. The system operates as follows when the memory address operation is performed
incorrectly.
No. 5203-6/27

6 Page



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共有リンク

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部品番号部品説明メーカ
LC737212

Telephone Dialer IC with On-Chip Memory for Push- Button Telephones

Sanyo Semicon Device
Sanyo Semicon Device
LC737212M

Telephone Dialer IC with On-Chip Memory for Push- Button Telephones

Sanyo Semicon Device
Sanyo Semicon Device


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