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參數資料
| 型號： | 935001480112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 時鐘及定時 |
| 英文描述： | LCD CLOCK, PDSO40 |
| 封裝： | PLASTIC, SOT-158-2, VSOP-40 |
| 文件頁數： | 15/18頁 |
| 文件大小： | 136K |
| 代理商： | 935001480112 |
1997 Apr 16
6
Philips Semiconductors
Product specication
4-digit LCD car clock
PCF1171C
CHARACTERISTICS
VDD =5V; VSS =0V; Tamb = 40 to +85 °C; crystal: f = 4.194304 MHz; Rs =50 ; CL = 12 pF; unless otherwise
specied.
Notes
1. The current IEXT =IREG +IDD +2 × Ii (+ LCD current).
2. For correct operation of the oscillator: VDD ≥ 3V.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
VDD
supply voltage
external regulation
3
6V
internal regulation
IREG =1mA
4
5
6
V
IREG
regulation current with
internal regulation
0.2
5mA
IDD
current consumption
all switches open; without LCD;
internal regulation
disconnected; note 1
50
400
700
A
ro
differential internal impedance
IREG =1mA
150
Oscillator (pins 1 and 2) (see note 2)
tosc
start time
200
ms
f/fosc
frequency stability
VDD = 100 mV
0.2
× 106 1 × 106
Rfb
feedback resistance
0.1
1M
Ci
input capacitance
9pF
Co
output capacitance
19
24
29
pF
Switches S1, S2 and S3 (pins 18, 3 and 4) and test inputs, TS, TR (pins 38 and 39)
Ii
input current
with inputs connected to VSS
50
150
500
A
td
debounce time
32
150
ms
RS
segment driver output
resistance
IL = ±50 A
1
2.5
k
RBP
backplane driver output
resistance
IL = ±250 A
0.2
0.5
k
fBP
backplane driver output
frequency
64
Hz
Voffset(DC)
LCD DC offset voltage
RL = 200 k; CL =1nF
±50
mV
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