AY0438
2.0
ELECTRICAL CHARACTERISTICS
Maximum Ratings*
VDD..............................................................................................................................................................-0.3V to +12V
Inputs (CLK, Data In, Load) ................................................................................................................. VCC to VDD +0.3V
LCDΦ Input ........................................................................................................................................ -0.3V to VDD +0.3V
Power Dissipation.................................................................................................................................................250 mW
Storage Temperature............................................................................................................................... -65˚C to +125˚C
Operating Temperature Industrial.............................................................................................................. -40˚C to +85˚C
* Exceeding these ratings could cause permanent damage to the device. This is a stress rating only and functional
operation of this device at these conditions is not implied. Operating ranges are specified in Standard Conditions.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Data labeled “typical” is presented for design guidance only and is not guaranteed.
TABLE 2: DC CHARACTERISTICS
VDD = +5V unless otherwise noted, TA = 40°C to +85°C
Characteristics
Supply Voltage
Sym
Min
Typ
Max
Units
Conditions
VDD
IDD
+3.0
—
25
13
—
+8.5
60
V
Supply Current
—
µA LCDΦ OSC < 15 kHz
—
30
µA LCDΦ OSC < 100 Hz
Input High Level
Input Low Level
VIH
VIL1
VIL2
IL
0.5 VDD
VDD
V
Clock
Data,
Load
0
—
0.1 VDD
0.1 VDD
±10
V
V
3.0V ≤ VDD ≤ 8.5V
3.0V ≤ VDD ≤ 8.5V
0
—
Input Leakage Current
Input Capacitance
—
0.01
—
µA VIN = 0V and +5.0V
CI
—
5.0
pF
V
VDD = +5.0V
IOH = -100 µA
IOL = 100 µA
Segment Output Voltage
VOH
VOL
VIN
VIL
IL
0.8 VDD
—
VDD
0
0.9 VDD
0
—
0.1 VDD
VDD
V
LCDΦ Input High Level
LCDΦ Input Low Level
LCDΦ Input Leakage
—
V
—
0.1 VDD
10
V
—
—
µA VIN = 0V and +5.0V
VDD = +5.0V
TABLE 3: AC CHARACTERISTICS
Characteristics
Clock Rate
Sym
Min
Typ
Max
Units
Conditions
f
DC
150
50
—
—
—
—
—
1.5
—
MHz
50% duty cycle
Data Set-up Time
Data Hold Time
tDS
tDH
tPW
tPD
nsec Data change to Clk falling edge
—
nsec
Load Pulse Width
Data Out Prop. Delay
175
—
—
nsec
500
nsec CL = 55 pF
1995 Microchip Technology Inc.
DS70010I-page 7