PCF8801 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
'PCF8801' PDF : 20 Pages View PDF
Philips Semiconductors
LCD driver for 140 × 2 segments
Product specification
PCF8801
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
Outputs to LCD
VCOM(tol)
output voltage tolerance
on pad COM1 and
pad COM2
Ro(COM)
output resistance on
pad COM1 and
pad COM2
Ro(S)
output resistance on
pads S0 to S140
VDD = 5 V; note 3
−135
−
−
−10 to +10 +135
5
30
7
30
Notes
1. Outputs to LCD are unloaded (open-circuit); inputs are at VSS or VDD; Rext = 330 kΩ.
2. All Schmitt trigger inputs.
3. Measured one at a time; load current 30 µA.
UNIT
mV
kΩ
kΩ
AC CHARACTERISTICS
VDD = 2.7 to 5.5 V; VSS = 0 V; Tamb = −40 to +85 °C; unless otherwise specified; all timing parameter values are valid
within VDD and Tamb range, and are referenced to VIL and VIH with an input voltage swing of VSS to VDD. The serial
interface timing parameters are defined in Fig.5.
SYMBOL
Rext
fosc
tH(OSC)
tL(OSC)
fclk(CLK)
tH(CLK)(LD)
tL(CLK)(LD)
tsu(DI-CLK)
th(D)
tsep
PARAMETER
CONDITIONS
external resistor
oscillator frequency at
pad INT_OSCO and
pad OSCI
note 1
HIGH time on pad OSCI
LOW time on pad OSCI
data shift clock frequency
on pad CLKI
HIGH time on pads CLKI,
LDPI and LDNI
LOW time on pads CLKI,
LDPI and LDNI
set-up time DI to CLKI
data input hold time
DI stable after CLKI
rise
separation time between
active edges of CLKI,
LDPI and LDNI
MIN.
264
240
TYP.
330
500
MAX.
396
1 000
UNIT
kΩ
Hz
400
−
400
−
−
−
400
−
400
−
50
−
500
−
800
−
−
ns
−
ns
1 000
kHz
−
ns
−
ns
−
ns
−
ns
−
ns
Note
1. Frequency accuracy is valid within VDD, Tamb and Rext. Typical output duty cycle is 50 : 50.
2000 Feb 04
10
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