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参数资料
| 型号： | MTA41300/P |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDIP18 |
| 封装： | 0.300 INCH, PLASTIC, DIP-18 |
| 文件页数： | 22/28页 |
| 文件大小： | 466K |
| 代理商： | MTA41300/P |
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1995 Microchip Technology Inc.
DS40101C-page 3
MTA41300
1.0
PIN DESCRIPTIONS
PIN NAME
TYPE
DESCRIPTION
TXD
Output
Data port for RS-232 serial data. Active low. For IBM PS/2 Mode,
this pin is a no connect and should be left open
MODE
Input
Mode select 1 = PS/2, 0 = RS-232 serial
HOR1
Input
Horizontal quadrature Input #1
HOR2
Input
Horizontal quadrature Input #2
PBTN
Input
Primary mouse button. Active low, 0 = button depressed
SBTN
Input
Secondary mouse button. Active low, 0 = button depressed
DBTN
Input
Optional trackball drag lock button. Active low, 0 = button
depressed. For mouse only operation, connect this pin to VDD
VERT1
Input
Vertical quadrature input #1
VERT2
Input
Vertical quadrature input #2
DLED
Output
Optional trackball drag LED. For mouse only operation, this pin is a
no connect and should be left open
OSC1
Input
4 MHz crystal or ceramic resonator connection
OSC2
Output
4 MHz crystal or ceramic resonator connection
DATA
I/O
Bidirectional data port for PS/2. For Serial Mouse Mode, this pin is
a no connect and should be left open
CLK
I/O
PS/2 data clock input. For Serial Mouse Mode, this pin is a no con-
nect and should be left open
MCLR
Input
A “low” voltage on this pin causes a reset condition for the
MTA41300 controller
VDD
Pwr
+5V
VSS
Pwr
Ground
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