參數資料
型號: UPD75004CU
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機
文件頁數: 47/66頁
文件大小: 542K
代理商: UPD75004CU
μ
PD75004, 75006, 75008
47
SERIAL TRANSFER OPERATION
Two-Line and Three-Line Serial I/O Modes (SCK: internal clock output):
Parameter
Symbol
t
KCY1
Conditions
MIN.
1600
3800
TYP.
MAX.
Unit
ns
ns
SCK Cycle Time
V
DD
= 4.5 to 6.0 V
SCK High-, Low-Level
Widths
t
KL1
t
KH1
t
SIK1
V
DD
= 4.5 to 6.0 V
t
KCY1
/2-50
t
KCY1
/2-150
150
ns
ns
ns
SI Set-Up Time (vs. SCK
)
SI Hold Time (vs. SCK
) t
KSI1
SCK
↓→
SO Output
Delay Time
400
0
ns
ns
t
KSO1
R
= 1 k
,
C
= 100 pF*
V
DD
= 4.5 to 6.0 V
250
0
1000
ns
TWO-LINE AND THREE-LINE SERIAL I/O MODES (SCK: external clock input):
Parameter
Symbol
t
KCY2
Conditions
MIN.
800
TYP.
MAX.
Unit
ns
SCK Cycle Time
V
DD
= 4.5 to 6.0 V
3200
400
1600
ns
ns
ns
SCK High-, Low-Level
Widths
t
KL2
t
KH2
V
DD
= 4.5 to 6.0 V
SI Set-Up Time (vs. SCK
)
SI Hold Time (vs. SCK
)
SCK
↓→
SO Output
Delay Time
t
SIK2
t
KSI2
t
KSO2
100
400
0
ns
ns
ns
R
= 1 k
, C
= 100 pF*
V
DD
= 4.5 to 6.0 V
300
0
1000
ns
*: R and C are load resistance and load capacitance of the SO output line.
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