HD404618 Datasheet, PDF (87/91 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

TONEC
TONER
R _L = 100 k Ω
HD404618 Series
OSC₁
Figure 49 Distortion and dB_CR Load Circuit
V_CC – 0.3 V
0.3 V
1/f_CP
t_CPH
t_CPL
t_CPr
t_CPf
Figure 50 Oscillator Timing
INT₀ , INT₁
0.9V_CC
0.1V_CC
tIH
tIL
Figure 51 Interrupt Timing
RESET
0.9VCC
0.1V_CC
t _RSTH
t _RSTf
Figure 52 Reset Timing
SCK
t _SCKf
V_CC – 1.0 V (0.9V_CC )*
0.4 V (0.1V_CC)*
SO
t _Scyc
t _SCKL
t _SCKr
t_SCKH
t _DSO
V_CC – 0.5 V
0.4 V
SI
t _SCKHD
After 8 transmit clock
pulses are input
t _SSI
t _HSI
0.9V _CC
0.1V_CC
Note: * V_CC – 1.0 V and 0.4 V are the threshold voltages for transmit clock output.
0.9V_CCand 0.1V_CC are threshold voltages for transmit clock input.
Figure 53 Serial Interface Timing
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