參數(shù)資料
型號(hào)： M38507F8SP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁數(shù)： 71/103頁
文件大小： 1275K
代理商： M38507F8SP
Rev.3.01
2003.06.20
page 5 of 98
3850 Group (Spec.H)
VCC, VSS
Functions
Name
Pin
Apply voltage of 2.7 V – 5.5 V to Vcc, and 0 V to Vss.
This pin controls the operation mode of the chip.
Normally connected to VSS.
Reset input pin for active “L”.
Input and output pins for the clock generating circuit.
Connect a ceramic resonator or quartz-crystal oscillator between the XIN and XOUT pins to set
the oscillation frequency.
When an external clock is used, connect the clock source to the XIN pin and leave the XOUT
pin open.
8-bit CMOS I/O port.
I/O direction register allows each pin to be individually
programmed as either input or output.
CMOS compatible input level.
CMOS 3-state output structure.
P10 to P17 (8 bits) are enabled to output large current for LED drive.
Power source
Table 1 Pin description (spec. H)
Function except a port function
Clock input
Clock output
I/O port P0
CNVSS input
CNVSS
RESET
Reset input
XIN
XOUT
P00/SIN2
P01/SOUT2
P02/SCLK2
P03/SRDY2
P04–P07
I/O port P1
P10–P17
Serial I/O2 function pin
Sub-clock generating circuit I/O
pins (connect a resonator)
I/O port P2
I/O port P3
I/O port P4
8-bit CMOS I/O port.
I/O direction register allows each pin to be individually
programmed as either input or output.
CMOS compatible input level.
P20, P21, P24 to P27: CMOS3-state output structure.
P22, P23: N-channel open-drain structure.
Serial I/O1 function pin
Serial I/O1 function pin/
Timer X function pin
A-D converter input pin
Timer Y function pin
Interrupt input pins
Interrupt input pin
SCMP2 output pin
Interrupt input pin
PWM output pin
8-bit CMOS I/O port with the same function as port P0.
CMOS compatible input level.
CMOS 3-state output structure.
8-bit CMOS I/O port with the same function as port P0.
CMOS compatible input level.
CMOS 3-state output structure.
P20/XCOUT
P21/XCIN
P22
P23
P24/RxD
P25/TxD
P26/SCLK1
P27/CNTR0/
SRDY1
P30/AN0–
P34/AN4
P40/CNTR1
P41/INT0
P42/INT1
P43/INT2/SCMP2
P44/INT3/PWM
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