Fujitsu FR20 Manual Do Utilizador
9
1.5
Pin Function Description
Table 1.5-1 lists the pin function of MB91191/MB91192 series.
The numbers shown in the tables has nothing to do with package pin numbers. For pin
numbers, see "1.4 Pin Assignment".
The numbers shown in the tables has nothing to do with package pin numbers. For pin
numbers, see "1.4 Pin Assignment".
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Pin Function List
Table 1.5-1 Pin Function List
Pin No. (LQFP)
Pin name
Form
Function
1 X0(I)
A
It is crystal oscillation pin.
2 X1(O)
3
Vss
-
It is Vss pin.
4 MD2
B
It is operating mode specification pin.
It is CMOS schmitt input.
It is CMOS schmitt input.
5 MD1
6 MD0
7 RST
B
It is reset input pin. It is CMOS schmitt input.
8
P70/XOUT
C
This pin is shared with clock output (X0/2, PCK/2). It is
CMOS input.
CMOS input.
9
P67/T4O
C
This pin is shared with timer 4 square wave output. It is
CMOS input.
CMOS input.
10
P66/T5O1
This pin is shared with timer 5 square wave output. It is
CMOS input.
CMOS input.
11
P65
It is general-purpose I/O port. It is CMOS input.
12
P64
It is general-purpose I/O port. It is CMOS input.
13
P63/ALE/ALE
This pin is shared with address strobe output.
It is CMOS input.
It is CMOS input.
14
P62/P62/WR1
This pin is shared with write strobe output 1.
It is CMOS input.
It is CMOS input.
15
P61/WR0/WR0
This pin is shared with write strobe output 0.
It is CMOS input.
It is CMOS input.
16
P60/RD /RD
This pin is shared with read strobe output.
It is CMOS input.
It is CMOS input.