參數(shù)資料
型號(hào)： MB90F548GLSPF
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, QFP-100
文件頁(yè)數(shù)： 67/67頁(yè)
文件大?。?/td> 746K
代理商： MB90F548GLSPF
MB90540/540G/545/545G Series
9
s
s PIN DESCRIPTION
(Continued)
Pin No.
Pin name
Circuit type
Function
LQFP*2
QFP*1
80
81
82
83
X0
X1
A
(Oscillation)
High speed crystal oscillator input pins
78
80
X0A
A
(Oscillation)
Low speed crystal oscillator input pins. For the one clock sys-
tem parts, perfom external pull-down processing.
77
79
X1A
Low speed crystal oscillator input pins. For the one clock sys-
tem parts, leave it open.
75
77
RST
B
External reset request input pin
50
52
HST
C
Hardware standby input pin
83 to 90
85 to 92
P00 to P07
I
General I/O port with programmable pullup. This function is
enabled in the single-chip mode.
AD00 to AD07
I/O pins for 8 lower bits of the external address/data bus. This
function is enabled when the external bus is enabled.
91 to 98 93 to 100
P10 to P17
I
General I/O port with programmable pullup. This function is
enabled in the single-chip mode.
AD08 to AD15
I/O pins for 8 higher bits of the external address/data bus. This
function is enabled when the external bus is enabled.
99 to 6
1 to 8
P20 to P27
I
General I/O port with programmable pullup. In external bus
mode, this function is valid when the corresponding bits in the
external address output control resister (HACR) are set to “1”.
A16 to A23
8-bit I/O pins for A16 to A23 at the external address/data bus.
In external bus mode, this function is valid when the corre-
sponding bits in the external address output control resister
(HACR) are set to “0”.
79
P30
I
General I/O port with programmable pullup. This function is
enabled in the single-chip mode.
ALE
Address latch enable output pin. This function is enabled
when the external bus is enabled.
810
P31
I
General I/O port with programmable pullup. This function is
enabled in the single-chip mode.
RD
Read strobe output pin for the data bus. This function is en-
abled when the external bus is enabled.
10
12
P32
I
General I/O port with programmable pullup. This function is
enabled in the single-chip mode or when the WR/WRL pin out-
put is disabled.
WRL
Write strobe output pin for the data bus. This function is en-
abled when both the external bus and the WR/WRL pin output
are enabled. WRL is write-strobe output pin for the lower 8 bits
of the data bus in 16-bit access. WR is write-strobe output pin
for the 8 bits of the data bus in 8-bit access.
WR
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