pcf8532 NXP Semiconductors, pcf8532 Datasheet - Page 30

• Manufacturer Part Number: pcf8532
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
11. Dynamic characteristics
Table 18.
V
[1]
[2]
[3]
PCF8532_1
Product data sheet
Symbol
f
f
t
t
t
t
t
Timing characteristics: I
f
t
t
t
t
t
t
t
t
C
t
t
t
t
clk
clk(ext)
clk(H)
clk(L)
PD(SYNC_N)
SYNC_NL
PD(drv)
SCL
BUF
HD;STA
SU;STA
VD;ACK
HIGH
LOW
f
r
SU;DAT
HD;DAT
SU;STO
w(spike)
DD
b
= 1.8 V to 5.5 V; V
Typical output duty factor: 50 % measured at the CLK output pin.
For f
should be between 100 k and 1 M . This resistor should be present even when no cascading configuration is used!
All timing values are valid within the operating supply voltage and ambient temperature range and are referenced to V
input voltage swing of V
clk(ext)
Dynamic characteristics
> 4 kHz it is recommended to use an external pull-up resistor between pin SYNC and pin V
Parameter
clock frequency
external clock frequency
HIGH-level clock time
LOW-level clock time
SYNC propagation delay
SYNC LOW time
driver propagation delay
SCL clock frequency
bus free time between a
STOP and START condition
hold time (repeated) START
condition
set-up time for a repeated
START condition
data valid acknowledge time
HIGH period of the SCL clock
LOW period of the SCL clock
fall time
rise time
capacitive load for each bus
line
data set-up time
data hold time
set-up time for STOP
condition
spike pulse width
SS
SS
= 0 V; V
2
C-bus
to V
DD
LCD
.
= 2.5 V to 8.0 V; T
Conditions
on pin CLK; see
external clock source used
external clock source used
V
of both SDA and SCL signals
of both SDA and SCL signals
LCD
Rev. 1 — 10 February 2009
= 5 V
amb
= 40 C to +85 C; unless otherwise specified.
Table 15
Universal LCD driver for low multiplex rates
[1]
[2]
[3]
Min
900
700
100
100
-
100
-
-
1.3
0.6
0.6
-
0.6
1.3
-
-
-
200
0
0.6
-
DD
. The value of the resistor
Typ
1800
-
-
-
30
-
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PCF8532
© NXP B.V. 2009. All rights reserved.
IL
Max
3000
5000
-
-
-
-
-
400
-
-
-
1.2
-
-
0.3
0.3
400
-
-
-
50
and V
IH
30 of 44
with an
Unit
Hz
Hz
ns
kHz
pF
ns
ns
ns
s
s
s
s
s
s
s
s
s
s
s
s
s