参数资料
型号: M38514E6-XXXFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO42
封装: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件页数: 61/93页
文件大小: 1137K
代理商: M38514E6-XXXFP
Rev.1.01
Oct 15, 2003
page 62 of 89
3851 Group (Built-in 24 KB or more ROM)
Table 18 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, or open.
P00 to P07
Input “H” or “L”, or open.
P10 to P17
Input “H” or “L”, or open.
P20 to P23
This pin is for serial data input.
Analog power supply input
Reference voltage input
Input port P0
Input port P1
Input port P2
I
P41
Input “H” when RESET is released only.
P40, P42 to P44
P24
This pin is for serial data output.
P25
P26
This pin is for serial clock input.
P27
Input port P4
RxD input
TxD output
SCLK1 input
BUSY output
I
P30 to P34
Input port P3
I
O
Input “H” or “L”, or open.
This pin is for BUSY signal output.
Input “H” or “L”, or open.
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