HD404054 Datasheet, PDF (97/101 Pages) Hitachi Semiconductor – HMCS400-series microcomputers designed to increase program productivity with large-capacity memory

HD404054 Series/HD404094 Series
SCK ₁
SO ₁
SI ₁
t _SCKf
V_CC – V_H (0.9 V_CC)*
0.4 V (0.1 V_CC)*
t _DSO
t _Scyc
t _SCKL
t _SCKr
t _SCKH
V_CC – V_H
0.4 V
t _SSI
t _HSI
0.9 V _CC
0.1 V _CC
Note: * V_CC – V_H and 0.4 V are the threshold voltages for transmit clock output.
V_H = 1.0 V : HD404052, HD404054, HD4074054, HD404092, HD404094, HD4074094
V_H = 2.0 V : HD40A4052, HD40A4054
0.9 V_CC and 0.1 V_CC are the threshold voltages for transmit clock output.
Figure 72 Serial Interface Timing
Test point
C
30 pF
V_CC
R_L = 2.6 kΩ
R
12 kΩ
1S2074 H
or equivalent
Figure 73 Timing Load Circuit
97