HD404369 Datasheet, PDF (114/117 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer

HD404369 Series
SCK
t _SCKf
V_CC – 0.5 V (0.8V_CC )*
0.4 V (0.2V_CC)*
t _DSO
SO
SI
t _Scyc
t _SCKL
t _SCKr
t _SCKH
V_CC – 0.5 V
0.4 V
t _SSI
t _HSI
0.7V _CC
0.3V_CC
Note: * V_CC – 0.5 V and 0.4 V are the threshold voltages for transmit clock output, and
0.8V_CC and 0.2V_CC are the threshold voltages for transmit clock input.
Figure 88 Serial Interface Timing
Test
point
C=
30 pF
V_CC
R_L = 2.6 kΩ
R=
12 kΩ
Hitachi
1S2074
or equivalent
Figure 89 Timing Load Circuit
112