MX10EXA 查看數據表（PDF） - Macronix International
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MX10EXA Datasheet PDF : 55 Pages
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MX10EXA
PIN DESCRIPTIONS
MNEMONIC PIN. NO.
PLCC LQFP
V SS
1, 22
16,39
V DD
23, 44 17,38
P0.0-P0.7 43-36
37-30
P1.0-P1.7 2-9
40-44,
1-3
2
40
P2.0-P2.7
3
4
5
6
7
8
9
24-31
41
42
43
44
1
2
3
18-25
TYPE NAME AND FUNCTION
I
Ground: 0V reference.
I
Power Supply: This is the power supply voltage for normal, idle, and
power down operation.
I/O Port 0: Port 0 is an 8-bit I/O port with a user-configurable output type.
Port 0 latches have 1s written to them and are configured in the quasi-
bidirectional mode during reset. The operation of port 0 pins as inputs
and outputs depends upon the port configuration selected. Each port
pin is configured independently. Refer to the section on I/O port con-
figuration and the DC Electrical Characteristics for details.
When the external program/data bus is used, Port 0 becomes the mul-
tiplexed low data/instruction byte and address lines 4 through 11.
I/O Port 1: Port 1 is an 8-bit I/O port with a user-configurable output type.
Port 1 latches have 1s written to them and are configured in the quasi-
bidirectional mode during reset. The operation of port 1 pins as inputs
and outputs depends upon the port configuration selected. Each port
pin is configured independently. Refer to the section on I/O port con-
figuration and the DC Electrical Characteristics for details.
Port 1 also provides special functions as described below.
O
A0/WRH: Address bit 0 of the external address bus when the external
data bus is configured for an 8 bit width. When the external data bus is
configured for a 16 bit width, this pin becomes the high byte write
strobe.
O
A1: Address bit 1 of the external address bus.
O
A2: Address bit 2 of the external address bus.
O
A3: Address bit 3 of the external address bus.
I
RxD1 (P1.4): Receiver input for serial port 1.
O
TxD1 (P1.5): Transmitter output for serial port 1.
I/O T2 (P1.6): Timer/counter 2 external count input/clockout.
I
T2EX (P1.7): Timer/counter 2 reload/capture/direction control
I/O Port 2: Port 2 is an 8-bit I/O port with a user-configurable output type.
Port 2 latches have 1s written to them and are configured in the quasi-
bidirectional mode during reset. The operation of port 2 pins as inputs
and outputs depends upon the port configuration selected. Each port
pin is configured independently. Refer to the section on I/O port con-
figuration and the DC Electrical Characteristics for details.
When the external program/data bus is used in 16-bit mode, Port 2
becomes the multiplexed high data/instruction byte and address lines
12 through 19. When the external program/data bus is used in 8-bit
mode, the number of address lines that appear on port 2 is user pro-
grammable.
P/N:PM0625 Specifications subject to change without notice, contact your sales representatives for the most update information. REV. 1.0, JUL. 01, 2005
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