參數(shù)資料
型號(hào): MSM9225BGA-2K
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類: 微控制器/微處理器
英文描述: 2 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PQFP44
封裝: PLASTIC, QFP-44
文件頁(yè)數(shù): 4/95頁(yè)
文件大?。?/td> 567K
代理商: MSM9225BGA-2K
MSM9225B User’s Manual
Chapter 1 Overview
1 – 5
Table 1-1 Pin Description (continued)
Symbol
Pin
Type
Description
Mode1, 0
29, 30
I
Microcontroller interface select pins
INT
11
O
Interrupt request output pin
When an interrupt request occurs, a “L” level is output. This pin automatically
outputs a “H” level after 32 Ts (T = 1/fosc).
Three types of interrupts share this pin: transmission complete, reception
complete, and error.
RESET
25
I
Reset pin
System is reset when this pin is at a “L” level.
XT
13
I
XT
14
O
Clock pins. If internal oscillator is used, connect a crystal (ceramic resonator).
If external clock is used, input clock via XT pin. The XT pin should be left open.
Rx0, Rx1
18, 19
I
Receive input pin. Differential amplifier included.
Tx0, Tx1
22, 23
O
Transmission output pin
V
DD
12, 20, 24, 40
Power supply pin: Connect all V
DD pins to the power supply source.
GND
6, 15, 17, 21, 28,
39
GND pin: Connect all GND pins to ground.
Mode1
Mode0
Interface
0
No address latch signal
01
Separate
buses
With address latch signal
10
Parallel mode
Multiplexed buses
11
Serial mode
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