MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
ELECTRICAL CHARACTERISTICS
(Ta = –20 °C to 85 °C, VDD = 3 V, unless otherwise noted)
Limits
Typ.
Symbol
VOL
Parameter
Test conditions
IOL = 2 mA
Unit
Max.
0.9
Min.
“L” level output voltage Port CARR
“H” level output voltage Ports D, E1, G
“H” level output voltage Port E0
“H” level output voltage CARR
V
V
VOH
VOH
VOH
IIL
IOH = –2 mA
2.1
1.5
1.0
IOH = –12 mA
IOH = –10 mA
VI = VSS
V
V
“L” level input current Ports D7, E, G
–1
1
µA
VI = VDD
IIH
“H” level input current Ports E0, E1
Output current at off-state Ports D, E0, E1
Supply current (when operating)
µA
µA
µA
Pull-down transistor in off-state
VO = VSS
–1
800
700
3
IOZ
f(XIN) = 4.0 MHz
f(XIN) = 500 kHz
400
350
1
IDD
µA
µA
kΩ
kΩ
Supply current (at RAM back-up)
Ta = 25 °C
0.1
150
0.5
300
3200
75
RPH
Pull-down resistor value Ports D7, E, G
VDD = 3 V, VI = 3 V
700
ROSC
Feedback resistor value between XIN–XOUT
BASIC TIMING DIAGRAM
Machine cycle
Pin name
Mi
Mi+1
Parameter
STCK
System clock
D0–D7,E0,E1
G0–G3
Ports D, E0, E1, G
output
D7
E0–E2
G0–G3
Ports D7, E, G input
MITSUBISHI
ELECTRIC
38
MITSUBISHI [ Mitsubishi Group ]
