FUJITSU MB91F109 FR30 - Manual (Page 46)

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CHAPTER 1 OVERVIEW
1.6 I/O Circuit Format
Tables 1.6.1 and 1.6.2 shows I/O circuit formats.
■ I/O Circuit Format
Table 1.6-1 I/O circuit format (1/2)
Classification Circuit format Remarks
A • For 50 MHz
• Oscillation feedback transistor:
About 1 M
Ω
• Standby control
B • CMOS level hysteresis input
• No standby control
• Pull-up resistance: About 50 k
Ω
C • CMOS level input
• High voltage control enabled for
flash test
STANDBY
X1
X0
Clock input
R
CMOS
Diffused resistor
P-channel transistor
N-channel transistor
Digital input
Control signal
Mode input
Diffused resistor