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PCF1172C Schematic ( PDF Datasheet ) - NXP Semiconductors

Teilenummer PCF1172C
Beschreibung 31/2-digit LCD car clock
Hersteller NXP Semiconductors
Logo NXP Semiconductors Logo 




Gesamt 16 Seiten
PCF1172C Datasheet, Funktion
INTEGRATED CIRCUITS
DATA SHEET
PCF1172C
31/2-digit LCD car clock
Product specification
Supersedes data of September 1993
File under Integrated Circuits, IC16
1997 Apr 16






PCF1172C Datasheet, Funktion
Philips Semiconductors
31/2-digit LCD car clock
Product specification
PCF1172C
CHARACTERISTICS
VDD = 5 V; VSS = 0 V; Tamb = 40 to +85 °C; crystal: f = 4.194304 MHz; Rs = 50 ; CL = 12 pF; unless otherwise
specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP.
MAX. UNIT
Supply
VDD supply voltage
external regulation
external regulation
3
3
internal regulation
IREG
regulation current with
internal regulation
IREG = 1 mA
4
0.2
IDD current consumption
all switches open; without LCD; 50
internal regulation
disconnected; note 1
ro differential internal impedance IREG = 1 mA
Oscillator (pins 1 and 2; note 2)
tosc
f/fosc
Rfb
Ci
Co
start time
frequency stability
feedback resistance
input capacitance
output capacitance
VDD = 100 mV
0.1
19
Switches S1, S2 and S3 (pins 18, 3 and 4)
Ii input current
td debounce time
RS segment driver output
resistance
with inputs connected to VSS
IL = ±50 µA
50
32
RBP backplane driver output
resistance
IL = ±250 µA
fBP backplane driver output
frequency
Voffset(DC) LCD DC offset voltage
RL = 200 k; CL = 1 nF
6V
6V
56V
5 mA
400 700 µA
150
200
0.2 × 106 1 × 106
1
9
24 29
ms
M
pF
pF
150 500 µA
150 ms
1 2.5 k
0.2 0.5 k
64
Hz
− ±50 mV
Notes
1. The current IEXT = IREG + IDD + 2 × Ii (+ LCD current).
2. For correct operation of the oscillator: VDD 3 V.
1997 Apr 16
6

6 Page









PCF1172C pdf, datenblatt
Philips Semiconductors
31/2-digit LCD car clock
Product specification
PCF1172C
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 Apr 16
12

12 Page





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