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EM78P221/2N
8-Bit Microcontroller with OTP ROM
Product Specification (V1.0) 10.19.2007 • 53
(This specification is subject to change without further notice)
7 Absolute Maximum Ratings
Items Rating
Temperature under bias -40°C to 85
°
C
Storage temperature -65°C to 150
°
C
Input voltage Vss-0.3V to Vdd+0.5V
Output voltage Vss-0.3V to Vdd+0.5V
Working Voltage 2.3V to 5.5V
Working Frequency DC to 16MHz
8 DC Electrical Characteristics
Ta= 25
°
C, VDD= 5.0V, VSS= 0V
Symbol Parameter Condition Min. Typ. Max. Unit
Crystal: VDD to 5V Two cycles with two clocks DC − 16 MHz
FXT
ERC: VDD to 5V R: 5.1KΩ, C: 100 pF F±30% 850 F±30% kHz
VIHRC
Input High Threshold
Voltage (Schmitt Trigger)
OSCI in RC mode −
3.75
− V
VILRC
Input Low Threshold Voltage
(Schmitt Trigger)
OSCI in RC mode −
1.25
− V
IIL
Input Leakage Current
for input pins
VIN = VDD, VSS –1.0
0
1.0 μA
VIH1
Input High Voltage
(Schmitt Trigger)
Ports 5, 6, 7, 8 −
3.75
− V
VIL1
Input Low Voltage
(Schmitt Trigger)
Ports 5, 6, 7, 8 −
1.25
− V
VIHT1
Input High Threshold
Voltage (Schmitt Trigger)
/RESET −
1.9
− V
VILT1
Input Low Threshold Voltage
(Schmitt Trigger)
/RESET −
1.2
− V
VIHT2
Input High Threshold
Voltage (Schmitt Trigger)
TCC, INT −
3.75
− V
VILT2
Input Low Threshold Voltage
(Schmitt Trigger)
TCC, INT −
1.25
− V
VIHX1 Clock Input High Voltage OSCI in crystal mode −
3.75
− V
VILX1 Clock Input Low Voltage OSCI in crystal mode −
1.25
− V
IOH1
Output High Voltage
(Ports 5, 6, 7, 8)
VOH = 0.9VDD − -9 − mA
IOH2
Output High Voltage
(Ports 6)
VOH = 0.7VDD − -27 − mA
IOL1
Output Low Voltage
(Ports 5, 6, 7, 8 )
VOL = 0.1VDD − 16.8 − mA
IOL2
Output Low Voltage
(Ports 5, 6)
VOL = 0.3VDD − 67.2 − mA