PCF8820U Philips Semiconductors, PCF8820U Datasheet - Page 34

• Manufacturer Part Number: PCF8820U
• Description: 67 x 101 Grey-scale/ECB colour dot matrix LCD driver
• Manufacturer: Philips Semiconductors

Philips Semiconductors
12 TIMING
V
unless otherwise specified.
2000 Dec 07
Clock signal
f
f
f
f
P
f
Reset timing; see Fig.24
P
t
t
t
t
t
LCD on and off timing; see Fig.25
P
t
t
I
P
f
t
t
t
t
t
t
C
t
t
SYMBOL
frame
frame(cal1)
frame(cal2)
osc
ext
WL
WH
W(spike)
su
oper
LCD(on)
LCD(off)
2
SCL
LOW
HIGH
SU;DAT
HD;DAT
r
f
SU;STA
HD;STA
DD1
AD
AD
AD
ADS
C-bus timing; see Fig.26; note 5
b
67 101 Grey-scale/ECB colour dot matrix
LCD driver
= 2.5 to 5.5 V; V
OSC
RES
V
SCL and SDA
LCDIN
LCD frame frequency
LCD frame frequency
LCD frame frequency
oscillator frequency
external clock frequency
reset pulse width LOW
reset pulse width HIGH
tolerable spike width on RES
input
reset-LOW pulse set-up time
after power-on
end of reset to interface being
operational
external LCD turn-on time
external LCD turn-off time
SCL clock frequency
SCL LOW time
SCL HIGH time
data set-up time
data hold time
rise time SDA and SCL
fall time SDA and SCL
capacitive load represented by
each bus line
set-up time repeated START
hold time START condition
PARAMETER
DD2
= V
DD3
= 2.7 to 5.5 V; V
not calibrated; note 1
calibrated; accurate calibration
timing of 190 s; note 2
calibrated; accurate calibration
timing of 190 s
not calibrated; note 3
not calibrated
V
after V
before V
note 6
note 6
DD
SS1
= 2.75 V; note 4
DD1
= V
DD1
CONDITIONS
turns on
SS2
turns off
34
= 0 V; V
LCDIN
= 4.5 to 14.5 V; T
44
68
63
190
190
1.0
1.5
1
1
0
1.3
0.6
100
0
20 + 0.1 C
20 + 0.1 C
0.6
0.6
MIN.
b
b
amb
77
77
77
336
336
TYP.
= 40 C to +85 C;
Product specification
PCF8820
158
91
96
670
670
10
30
3
400
0.9
300
300
400
MAX.
Hz
Hz
Hz
kHz
kHz
ns
ms
ms
kHz
ns
ns
ns
pF
UNIT
s
s
s
s
s
s
s
s
s