MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
TIMING REQUIREMENT CONDITION AND SWITCHING CHARACTERISTICS
(Ta = 25 °C, VDD = 4.0 V, VPP = 12.5 V)
Limits
Symbol
Parameter
Unit
Max.
Min.
2.0
2.0
500
2.0
2.0
0.19
0.19
1.0
450
450
40
tCH
tCR
Serial transfer width time
Read wait time after transfer
Read pulse width
µs
µs
ns
µs
µs
ms
ms
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
tWR
tRC
Transfer wait time after read
Program wait time after transfer
Program pulse width
tCP
0.21
5.25
tWP
tOWP
tC(CK)
tW(CKH)
Added program pulse width
SCLK input cycle time
SCLK “H” pulse width
tW(CKL) SCLK “L” pulse width
tr(CK)
tf(CK)
SCLK rising time
SCLK falling time
40
180
td(C–Q) SDA output delay time
0
th(C–Q)
SDA output hold time
0
th(C–E) SDA output hold time (only for 16th bit) 100
tsu(D–C) SDA input set-up time
60
th(C–D)
180
SDA input hold time
TIMING DIAGRAM
tC(CK)
tf(CK)
tW(CKL)
tW(CKH)
tr(CK)
SCLK
th(C-Q)
td(C-Q)
th(C-E)
SDA output
tsu(D-C)
th(C-D)
SDA input
Measurement condition
Output timing voltage: VOL = 0.8 V, VOH = 2.0 V
Input timing voltage: VIL = 0.2 VDD, VIH = 0.8 VDD
MITSUBISHI
ELECTRIC
44
MITSUBISHI [ Mitsubishi Group ]
