Table 1.7-3, Lumn table 1.7-3 "i – FUJITSU Semiconductor Controller MB89950/950A User Manual
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CHAPTER 1 OVERVIEW
Table 1.7-3 I/O circuit type (1/2)
Type
Circuit
Remarks
A
•
Crystal oscillator
•
Feedback resistor: About 1 M
Ω (5 V)
B
•
CMOS input
•
Pull-down resistor (N-ch): About 50 k
Ω (5 V)
C
•
Output pull-up resistor (P-ch): About 50 k
Ω (5 V)
•
Hysteresis input
D
•
N-ch open-drain output
•
CMOS input
•
The segment driver output is optional.
X1
X0
S
P-ch
P-ch
N-ch
N-ch
tandby control signal
N-ch
R
R
P-ch
N-ch
N-ch
P-ch
N-ch
P-ch
N-ch