em78p257 ELAN Microelectronics Corp, em78p257 Datasheet - Page 72

• Manufacturer Part Number: em78p257
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

6. ELECTRICAL CHARACTERISTICS
6.1 DC Electrical Characteristic
This specification is subject to change without prior notice.
Symbol
VIHT1 Input High Threshold Voltage (VDD=5V)
VIHX1
VIHT2 Input High Threshold Voltage (VDD=3V)
VIHX2
VOH1
VOH2 Output High Voltage (P67 set to IR OUT)
VILT1
VILX1
VILT2
VILX2
VOL1
VOL2
ICC1
ICC2
ICC3
ICC4
VIH1
VIH2
ISB1
ISB2
VIL1
VIL2
IPH
IPD
Fxt
IIL
* These parameters are characterizes and tested.
(Ta=0~70 C, VDD=5.0V 5%, VSS=0V)
Output Low Voltage (P67 set to IR OUT)
Input Low Threshold Voltage (VDD=5V)
Input Low Threshold Voltage (VDD=3V)
Input Leakage Current for input pins
Clock Input High Voltage ,(VDD=5V)
Clock Input High Voltage (VDD=3V)
Clock Input Low Voltage (VDD=3V)
Clock Input Low Voltage(VDD=5V)
Output High Voltage (Ports 5, 6)
Output Low Voltage (Ports 5, 6)
Input High Voltage (VDD=5V)
Input High Voltage (VDD=3V)
Input Low Voltage (VDD=5V)
Input Low Voltage (VDD=3V)
(VDD=5.0V) at two clocks
(VDD=5.0V) at two clocks
Operating supply current
Operating supply current
Operating supply current
Operating supply current
(VDD=3V) at two clocks
(VDD=3V) at two clocks
Power down current
Power down current
XTAL (VDD to 2.3V)
IC, ER (VDD to 5V)
Pull-down current
XTAL (VDD to 3V)
XTAL (VDD to 5V)
ERC (VDD to 5V)
IRC (VDD to 5 V)
Pull-high current
Parameter
Pull-down active, input pin at VDD
output pin floating, WDT dis abled
output pin floating, WDT enabled
Pull-high active, input pin at VSS
(Crystal type, two clocks), output
(Crystal type, two clocks), output
(Crystal type, two clocks), output
(Crystal type, two clocks), output
/RESET= 'High', Fosc=32KHz
/RESET= 'High', Fosc=32KHz
All input and I/O pins at VDD,
All input and I/O pins at VDD,
/RESET= 'High', Fosc=2MHz
/RESET= 'High', Fosc=4MHz
pin floating, WDT disabled
pin floating, WDT enabled
Two cycle with two clocks
4MHz, 1MHz, 455KHz,
72
R: 5.1K , C: 100 pF
VIN = VDD, VSS
IOH = -20.0 mA
IOL = 20.0 mA
IOH = -9.0 mA
/RESET, TCC
/RESET, TCC
/RESET, TCC
/RESET, TCC
IOL = 9.0 mA
32.768KHz
pin floating
pin floating
Condition
Ports 5, 6
Ports 5, 6
Ports 5, 6
Ports 5, 6
R: 51K
OSCI
OSCI
OSCI
OSCI
F 30
F 35
F 30
Min
DC
DC
DC
2.0
2.0
2.5
1.5
1.5
1.5
2.4
2.4
-50
25
-100
830 F 30
Typ
4.3
EM78P257
50
15
19
F
1
07.27.2004 (V1.4)
OTP ROM
F 35
F 30
-240
Max
120
0.8
0.8
1.0
0.4
0.4
0.6
0.4
0.4
2.0
4.0
20
10
30
35
4
8
1
1
MHz
MHz
MHz
MHz
Unit
KHz
mA
mA
Hz
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
A
A
A
A