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1.6 I/O Circuit Type
Table 1.6-1 shows the I/O circuit type.
■ I/O Circuit Type
Table 1.6-1 I/O circuit types
Classifi-
cation
Circuit Type Remark
A
• Oscillation return resistance about
1MΩ
B
• CMOS schmitt input
C
• CMOS level output
• CMOS input without standby
control
X0,OSCI
X1,OSCO
Clock input
Standby control
Input
DC test
DC test
Standby control = 1 fix
Output data
Direction CTL
Input