MB89670 Ver la hoja de datos (PDF) - Fujitsu
Número de pieza
componentes Descripción
Lista de partido
MB89670 Datasheet PDF : 59 Pages
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MB89670/A Series
s PIN DESCRIPTION
Pin no.
QFP*1
QFP*2
MQFP*3
11
13
12
14
9
11
10
12
14
16
Pin name
X0
X1
MOD0
MOD1
RST
38 to 31 40 to 33 P00/AD0 to
P07/AD7
30 to 23 32 to 25 P10/A08 to
P17/A15
22
24
P20/BUFC
21
23
P21/HAK
20
22
P22/HRQ
19
21
P23/RDY
18
20
P24/CLK
17
19
P25/WR
16
18
P26/RD
15
17
P27/ALE
*1: FPT-80P-M11
*2: FPT-80P-M06
*3: MQP-80C-P01
Circuit
type
Function
A
Clock oscillator pins
B
Operating mode selection pins
Connect directly to VCC or VSS.
C
Reset I/O pin
This pin is an N-ch open-drain output type with pull-up
resistor and a hysteresis input.
“L” is output from this pin by an internal reset source.
The internal circuit is initialized by the input of “L”.
D
General-purpose I/O ports
When an external bus is used, these ports function as
multiplex pins of lower address output and data I/O.
General-purpose I/O ports
When an external bus is used, these ports function as
upper address output pins.
F
General-purpose output port
When an external bus is used, this port can also be
used as a buffer control output by setting the BCTR.
F
General-purpose output port
When an external bus is used, this port can also be
used as a hold acknowledge output by setting the
BCTR.
D
General-purpose output port
When an external bus is used, this port can also be
used as a hold request input by setting the BCTR.
D
General-purpose output port
When an external bus is used, this port functions as a
ready input.
F
General-purpose output port
When an external bus is used, this port functions as a
clock output.
F
General-purpose output port
When an external bus is used, this port functions as a
write signal output.
F
General-purpose output port
When an external bus is used, this port functions as a
read signal output.
F
General-purpose output port
When an external bus is used, this port functions as an
address latch signal output.
(Continued)
8
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