- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄299586 > P83C251TQ24 (INTEL CORP) 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP40 PDF資料下載
參數(shù)資料
| 型號： | P83C251TQ24 |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 7/36頁 |
| 文件大?。?/td> | 813K |
| 代理商： | P83C251TQ24 |
第1頁第2頁第3頁第4頁第5頁第6頁當(dāng)前第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁
8xC251TB/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
9
PSEN#
O
Program Store Enable. Read signal output. This output is asserted for a
memory address range that depends on bits RD0 and RD1 in configu-
ration byte UCONFIG0 (see RD#).
—
RD#
O
Read or 17th Address Bit (A16). Read signal output to external data
memory or 17th external address bit (A16), depending on the values of
bits RD0 and RD1 in configuration byte UCONFIG0. (See PSEN#).
P3.7/A16
RST
I
Reset. Reset input to the chip. Holding this pin high for 64 oscillator
periods while the oscillator is running resets the device. The port pins are
driven to their reset conditions when a voltage greater than VIH1 is
applied, whether or not the oscillator is running. This pin has an internal
pulldown resistor, which allows the device to be reset by connecting a
capacitor between this pin and VCC.
Asserting RST when the chip is in idle mode or powerdown mode returns
the chip to normal operation.
—
RXD
I/O
Receive Serial Data. RXD sends and receives data in serial I/O mode 0
and receives data in serial I/O modes 1, 2, and 3.
P3.0
RXD1
I/O
Receive Serial Data 1. RXD1 sends and receives data in serial I/O
mode 0 and receives data in serial I/O modes 1, 2, and 3 for the 2nd
serial port.
P1.2/ECI
T1:0
I
Timer 1:0 External Clock Inputs. When timer 1:0 operates as a counter,
a falling edge on the T1:0 pin increments the count.
P3.5:4
T2
I/O
Timer 2 Clock Input/Output. For the timer 2 capture mode, this signal is the
external clock input. For the clock-out mode, it is the timer 2 clock output.
P1.0
T2EX
I
Timer 2 External Input. In timer 2 capture mode, a falling edge initiates a
capture of the timer 2 registers. In auto-reload mode, a falling edge
causes the timer 2 registers to be reloaded. In the up-down counter
mode, this signal determines the count direction: 1 = up, 0 = down.
P1.1
TXD
O
Transmit Serial Data. TXD outputs the shift clock in serial I/O mode 0
and transmits serial data in serial I/O modes 1, 2, and 3.
P3.1
TXD1
O
Transmit Serial Data 1. TXD1 outputs the shift clock in serial I/O mode 0
and transmits serial data in serial I/O modes 1, 2, and 3 for the 2nd serial
port.
P1.3/CEX0
VCC
PWR
Supply Voltage. Connect this pin to the +5V supply voltage.
—
VCC2
PWR
Secondary Supply Voltage 2. This supply voltage connection is
provided to reduce power supply noise. Connection of this pin to the +5V
supply voltage is recommended. However, when using the 8XC251SB as
a pin-for-pin replacement for the 8XC51FX, V
SS
2 can be unconnected
without loss of compatibility. (Not available on DIP)
—
VSS
GND
Circuit Ground. Connect this pin to ground.
—
VSS1
GND
Secondary Ground. This ground is provided to reduce ground bounce
and improve power supply bypassing. Connection of this pin to ground is
recommended. However, when using the 8xC251TB/TQ as a pin-for-pin
replacement for the 8XC51BH, VSS1 can be unconnected without loss of
compatibility. (Not available on DIP)
—
Table 6. Signal Descriptions (Sheet 2 of 3)
Signal
Name
Type
Description
Alternate
Function
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PA01100-T | IC SOCKET |
| PA01090-T | IC SOCKET |
| PA01170-T | IC SOCKET |
| PA01210-T | IC SOCKET |
| PA0277 | 1 ELEMENT, 0.7 uH, GENERAL PURPOSE INDUCTOR, SMD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P83C266 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C266BDR | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C270 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for NTSC TVs with On-Screen Display OSD and Closed Caption CC |
| P83C270AAR | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for NTSC TVs with On-Screen Display OSD and Closed Caption CC |
| P83C280 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc. |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。