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參數(shù)資料
| 型號： | LC7267 |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP42 |
| 封裝： | SDIP-42 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 144K |
| 代理商： | LC7267 |
.
VDD,VSS:
Power supply pin
.
XIN,XOUT:
.
FIF1, FIF2, FIF3: FM IF offset value select pin
FIF1
00001111
FIF2
00110011
FIF3
01010101
IF (MHz)
+10.700
+10.725
+10.675
+10.750
–10.700
–10.725
–10.675
–10.650
.
AIF1, AIF2: AM IF offset value select pin
AIF1
0011
AIF2
1001
IF (kHz)
+450 (1)
+450 (2)
+455
+469
Display step
10 kHz
1 kHz step
1: High level
0: Low level
(Note) 450 kHz (1): 10 kHz-step display, others: 1 kHz-step display
.
FMI, AMI: Local OSC signal input pin
FMI: For FM
AMI: For MW, LW
.
FM/AM:
FM/MW, LW select pin
FM:
High level
MW, LW: Low level
.
CTR/CLK: Frequency display/time display select pin
CTR (Counter): High level
CLK (Clock):
Low level
.
DEMAND: Input pin for instructing execution of setting
CTR/CLK
DEMAND
MODE
0
1
Mode of setting by the time signal and hours-minutes setting mode
0
Time display mode
.
SET:
Input pin for setting hours-minutes
This pin is set at ‘‘M’’ level normally. The input signal of ‘‘H’’/‘‘L’’ level acts as follows:
When in the mode of setting by the time signal and hours-minutes setting mode (CTR/CLK = ‘‘L’’, DEMAND = ‘‘H’’)
High level: Execution of hours setting
Advance ata2Hz rate 1.2 seconds after the pin is set to ‘‘H’’ level.
Low level: Execution of setting by the time signal and minutes setting
Advance ata2Hz rate 1.2 seconds after the pin is set to ‘‘L’’ level.
Setting by the time signal is executed when the pin is set off within 1.0 second after set to ‘‘L’’ level.
No carry to high-order digit occurs.
.
INHI:
Input pin for turning OFF the segment pins, inhibiting the SET/DEMAND pin from functioning, and preventing the
AMI amp from operating
High level: Normal operation
Low level: Segment pin OFF, SET/DEMAND pin function inhibit
.
12H/24H: Input pin for selecting 12-hour system with PM sign/24-hour system
High level: 12-hour system with PM sign
Low level: 24-hour system
Crystal oscillator
Input amplifier
LC7267
No. 1511- 4/10
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