參數(shù)資料
型號: M38507M8A-XXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PDIP42
封裝: 13 X 36.72 MM, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁數(shù): 52/90頁
文件大?。?/td> 899K
代理商: M38507M8A-XXXSP
Rev.2.10
2005.11.14
page 54 of 86
REJ03B0093-0210
3850 Group (Spec.A)
Table 11 Description of pin function (Standard Serial I/O Mode)
Pin
Description
VCC,VSS
Apply program/erase protection voltage to Vcc pin and 0 V to Vss pin.
CNVSS
Connect to VCC when VCC = 4.5 V to 5.5 V.
Connect to Vpp (=4.5 V to 5.5 V) when VCC = 2.7 V to 4.5 V.
RESET
Reset input pin. While reset is “L” level, a 20 cycle or longer clock
must be input to XIN pin.
XIN
Connect a ceramic resonator or crystal oscillator between XIN and
XOUT pins. To input an externally generated clock, input it to XIN pin
and open XOUT pin.
XOUT
Name
Power input
CNVSS
Reset input
Clock input
Clock output
I/O
I
O
AVSS
VREF
Connect AVSS to VSS .
Enter the reference voltage for AD from this pin.
P00 to P07
Input “H” or “L” level signal or open.
P10 to P17
Input “H” or “L” level signal or open.
P20 to P23
Input “H” or “L” level signal or open.
Analog power supply input
Reference voltage input
Input port P0
Input port P1
Input port P2
I
P41
Input “H” level signal, when reset is released.
P40, P42 to P44
Input “H” or “L” level signal or open.
P24
Serial data input pin
P25
P26
Serial clock input pin
P27
BUSY signal output pin
Input port P4
RxD input
TxD output
SCLK1 input
BUSY output
I
O
I
O
Serial data output pin
I
P30 to P34
Input “H” or “L” level signal or open.
Input port P3
I
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