參數(shù)資料
型號： MB90F342CESPF
元件分類： 微控制器/微處理器
英文描述： MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁數(shù)： 3/84頁
文件大小： 1142K
代理商： MB90F342CESPF
MB90340E Series
11
■ PIN DESCRIPTION
(Continued)
Pin No.
Pin name
I/O
Circuit
type*3
Function
QFP100*1 LQFP100*2
1 to 4
99 to 2
P24 to P27
G
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.
A20 to A23
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).
IN0 to IN3
Trigger input pins for input captures.
53
P30
G
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.
ALE
Address latch enable output pin. This function is enabled when
the external bus is enabled.
IN4
Trigger input pin for input capture.
64
P31
G
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.
RD
External read strobe output pin. This function is enabled when the
external bus is enabled.
IN5
Trigger input pin for input capture.
75
P32
G
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.
WR / WRL
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.
INT10R
External interrupt request input pin.
86
P33
G
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.
WRH
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.
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