User Manual

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5
第
5
页 共
10
页
Output High Voltage 1
(DB0~DB7)
V
OH1
I
OH
=-0.205mA 2.4 — Vdd V
V
OL1
I
OL
=1.2mA — — 0.4 V
Output High Voltage 2
(Except DB0~DB7)
V
OH2
I
O
= -40uA 0.9Vdd — V
V
OL2
I
O
=40uA — — 0.1Vdd V
Input Leakage Current I
IKG
V
IN
=0V～VDD -1 — 1 uA
Input Low Current I
IL
V
IN
=0V V
DD
=5V(pull
up)
-50 -125 -250 uA
Internal clock(external Rf)
f
OSC1
Rf=91KΩ±2%，
VDD=5V
190 270 350 KHz
External clock
f
OSC
—
125 270 410 KHz
duty 45 50 55 %
t
R
, t
F
— 0.2 uS
LCD Driving Voltage V
LCD
V
DD-
V5(1/5,1/4bias) 3.0 — 11.0 V
8.2 AC Characteristics (VDD=+5.0V, VSS=0V, Ta=-20~70°)
Characteristic Symbol
Test
Condition
Min TYP Max Unit
SCL Cycle Time f
SCLK
I
2
C
— — 400 KHz
SCL Pulse Width t
LOW
1.3 — — uS
SCL Rise/Fail Time t
HIGH
0.6 — — uS
Address Setup Time t
SU:DAT
100 — — nS
Address Hold Time t
HD:DAT
0 — 0.9 uS
SCL/SDA Rise/Pulse Time t
r
,t
f
20 — 300 nS
START Steup Time t
SU:STA
0.6 — — uS
START Hold Time t
HD:STA
0.6 — — uS
STOP Steup Time t
SU:STO
0.6 — — uS
STOP、START Spacing
Interval
t
BUF
1.3 — — uS
MPU write timing
START STOP:
ASK :