mb90f345cespfv Fujitsu Microelectronics, Inc., mb90f345cespfv Datasheet - Page 13

• Manufacturer Part Number: mb90f345cespfv
• Description: 16-bit Microcontroller
• Manufacturer: Fujitsu Microelectronics, Inc.

I PIN DESCRIPTION
QFP100*
1 to 4
5
6
7
8
Pin No.
1
LQFP100*
99 to 2
3
4
5
6
2
P24 to P27
A20 to A23
WR / WRL
IN0 to IN3
Pin name
INT10R
WRH
ALE
P30
P31
P32
P33
IN4
IN5
RD
Circuit
type*
I/O
G
G
G
G
G
3
General purpose I/O pins. The register can be set to select
whether to use a pull-up resistor.In external bus mode, the pin is
enabled as a general-purpose I/O port when the corresponding bit
in the external address output control register (HACR) is 1.
Output pins of the external address bus. When the corresponding
bit in the external address output control register (HACR) is 0, the
pins are enabled as high address output pins (A20 to A23).
Trigger input pins for input captures.
General purpose I/O pin.The register can be set to select whether
to use a pull-up resistor.
This function is enabled in single-chip mode.
Address latch enable output pin. This function is enabled when
the external bus is enabled.
Trigger input pin for input capture.
General purpose I/O pin.The register can be set to select whether
to use a pull-up resistor.
This function is enabled in single-chip mode.
External read strobe output pin. This function is enabled when the
external bus is enabled.
Trigger input pin for input capture.
General purpose I/O pin. The register can be set to select whether
to use a pull-up resistor. This function is enabled either in single-
chip mode or when the WR/WRL pin output is disabled.
Write strobe output pin for the external data bus. This function is
enabled when both the external bus and the WR/WRL pin output
are enabled. WRL is used to write-strobe 8 lower bits of the data
bus in 16-bit access while WR is used to write-strobe 8 bits of the
data bus in 8-bit access.
External interrupt request input pin.
General purpose I/O pin. The register can be set to select whether
to use a pull-up resistor.This function is enabled either in single-
chip mode or when the WRH pin output is disabled.
Write strobe output pin for the upper 8 bits of the external data
bus. This function is enabled when the external bus is enabled,
when the external bus 16-bit mode is selected, and when the
WRH output pin is enabled.
MB90340E Series
Function
(Continued)
13