HD404639R Datasheet, PDF (129/135 Pages) Renesas Technology Corp – 4-Bit Single-Chip Microcomputer

HD404639R Series
Serial Interface Timing Characteristics (HD404638R, HD404639R, HD40A4638R, HD40A4639R:
V_CC = 2.7 to 6.0 V, GND = 0 V, T_a = –20 to +75°C; HD407A4639R: V_CC = 2.7 to 5.5 V, GND = 0 V, T_a
= –20 to +75°C, unless otherwise specified)
During Transmit Clock Output
Item
Symbol Pin(s)
Test Condition
Min Typ Max Unit Notes
Transmit
t _Scyc
clock cycle
time
SCK_1, SCK₂ Load shown in figure 105 1
—
—
t _cyc
1
Transmit
t _SCKH
SCK_1, SCK₂ Load shown in figure 105 0.5
—
—
t _Scyc
1
clock high
width
Transmit
t _SCKL
SCK_1, SCK₂ Load shown in figure 105 0.5
—
—
t _Scyc
1
clock low
width
Transmit
t _SCKr
SCK_1, SCK₂ Load shown in figure 105 —
—
200 ns 1
clock rise
time
Transmit
t _SCKf
SCK_1, SCK₂ Load shown in figure 105 —
—
200 ns 1
clock fall time
Serial output t_DSO
data delay
time
SO_1, SO₂ Load shown in figure 105 —
—
500 ns 1
Serial input t_SSI
data setup
time
SI_1, SI₂
300 —
—
ns 1
Serial input t_HSI
data hold
time
SI_1, SI₂
300 —
—
ns 1
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