參數(shù)資料
型號(hào): PCF8578
廠商: NXP Semiconductors N.V.
英文描述: LCD row/column driver for dot matrix graphic displays
中文描述: 液晶行/列驅(qū)動(dòng)點(diǎn)陣圖形顯示
文件頁數(shù): 28/44頁
文件大小: 323K
代理商: PCF8578
1998 Sep 08
28
Philips Semiconductors
Product specification
LCD row/column driver for dot matrix
graphic displays
PCF8578
13 AC CHARACTERISTICS
All timing values are referenced to V
IH
and V
IL
levels with an input voltage swing of V
SS
to V
DD
.
V
DD
= 2.5 to 6 V; V
SS
= 0 V; V
LCD
= V
DD
3.5 V to V
DD
9 V; T
amb
=
40 to +85
°
C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
f
CLK1
clock frequency at multiplex rates of
1 : 8, 1 : 16 and 1 : 32
clock frequency at multiplex rates of
1 : 24
SYNC propagation delay
driver delays
R
OSC
= 330 k
; V
DD
= 6 V
1.2
2.1
3.3
kHz
f
CLK2
R
OSC
= 330 k
; V
DD
= 6 V
0.9
1.6
2.5
kHz
t
PSYNC
t
PLCD
500
100
ns
μ
s
V
DD
V
LCD
= 9 V;
with test loads
I
2
C-bus
f
SCL
t
SW
t
BUF
t
SU;STA
t
HD;STA
t
LOW
t
HIGH
t
r
t
f
t
SU;DAT
t
HD;DAT
t
SU;STO
SCL clock frequency
tolerable spike width on bus
bus free time
start condition set-up time
start condition hold time
SCL LOW time
SCL HIGH time
SCL and SDA rise time
SCL and SDA fall time
data set-up time
data hold time
stop condition set-up time
4.7
4.7
4.0
4.7
4.0
250
0
4.0
4.0
100
100
1
0.3
kHz
ns
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
ns
ns
μ
s
repeated start codes only
Fig.19 AC test loads.
MSA829
3.3 k
1.5 k
0.5 VDD
VDD
SDA
SYNC, CLK
1 nF
C39 to C32,
R31/C31 to R8/C8
and R7 to R0
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