SyncMOS Technologies International, Inc.
SM8951A/8952A
8-Bits Micro-controller
With 4/8KB flash embedded
Operating Conditions
Symbol
TA
VCC5
VCC3
Fosc 25
Fosc 40
Description
Operating temperature
Supply voltage
Supply voltage
Oscillator Frequency
Oscillator Frequency
Min.
-40
4.5
3
3.0
3.0
Typ.
25
5.0
3.3
25
40
Max.
85
5.5
3.6
25
40
Unit.
℃
Remarks
Ambient temperature under bias
For C Version
For L Version
For 5V, 3.3V application
For 5V application
V
V
MHz
MHz
DC Characteristics
(TA = -40 degree C to 85 degree C, Vcc = 3.0V to 5.5V)
Symbol
VIL1
VIL2
VIH1
VIH2
VOL1
VOL2
VOH1
VOH2
IIL
ITL
ILI
R RES
C IO
I CC
Parameter
Input Low Voltage
Input Low Voltage
Input High Voltage
Input High Voltage
Output Low Voltage
Output Low Voltage
Output High Voltage
Output High Voltage
Logical 0 Input Current
Logical Transition Current
Input Leakage Current
Reset Pull-down
Resistance
Pin Capacitance
Power Supply Current
Valid
port 0,1,2,3,#EA
RES, XTAL1
port 0,1,2,3,#EA
RES, XTAL1
port 0, ALE, #PSEN
port 1,2,3
port 0
port 1,2,3,ALE,#PSEN
port 1,2,3,4
port 1,2,3,4
port 0, #EA
RES
Vdd
Min.
-0.5
0
2.0
70%Vcc
Max.
0.8
0.8
Vcc+0.5
Vcc+0.5
0.45
0.45
Unit
V
V
V
V
V
V
V
V
V
V
Test Conditions
2.4
90%Vcc
2.4
90%Vcc
-75
-650
±10
50
300
10
20
6.5
50
IOL=8mA (5V) / IOL=6mA
(3.3V)
IOL=6.5mA (5V) / IOL=5mA
(3.3V)
IOH=-800uA (only for VCC =5V)
IOH=-80uA
IOH=-60uA (only for VCC =5 V)
IOH=-10uA
Vin=0.45V
Vin=2.0V
0.45V<Vin<Vcc
uA
uA
uA
Kohm
pF
mA
mA
uA
Freq=1MHz, Ta=25
℃
Active mode, 16MHz
Idle mode, 16MHz
Power down mode
Note1:Under steady state (non-transient) conditions, IOL must be externally
Limited as follows : Maximum IOL per port pin : 10mA
Maximum IOL per 8-bit port : port 0 :26mA
port 1,2,3
:15mA
Maximum total IOL for all output pins : 71mA
If IOL exceeds the condition, VOL may exceed the related specification. Pins are not guaranteed to sink current
greater than the listed test conditions.
Note2 : Minimum VCC for Power-down is 2V.
AC Characteristics
(16/25/40MHz, operating conditions; CL for Port 0, ALE and PSEN Outputs=100pF; CL for all Other Output=80pF)
Specifications subject to change without notice contact your sales representatives for the most recent information.
7
Ver 2.1
SM8951A/8952A 08/2006
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
