DataSheet.es    


PDF 83C251SQ Data sheet ( Hoja de datos )

Número de pieza 83C251SQ
Descripción HIGH-PERFORMANCE CHMOS MICROCONTROLLER
Fabricantes Intel 
Logotipo Intel Logotipo



Hay una vista previa y un enlace de descarga de 83C251SQ (archivo pdf) en la parte inferior de esta página.


Total 30 Páginas

No Preview Available ! 83C251SQ Hoja de datos, Descripción, Manual

PRELIMINARY
8XC251SA/SB/SP/SQ
HIGH-PERFORMANCE
CHMOS MICROCONTROLLER
Commercial/Express
s Real-time and Programmed Wait State
Bus Operation
s Binary-code Compatible with MCS® 51
s Pin Compatible with 44-pin PLCC and 40-
pin PDIP MCS 51 Sockets
s Register-based MCS® 251 Architecture
— 40-byte Register File
— Registers Accessible as Bytes, Words,
or Double Words
s Enriched MCS 51 Instruction Set
— 16-bit and 32-bit Arithmetic and Logic
Instructions
— Compare and Conditional Jump
Instructions
— Expanded Set of Move Instructions
s Linear Addressing
s 256-Kbyte Expanded External Code/Data
Memory Space
s ROM/OTPROM/EPROM Options:
16 Kbytes (SB/SQ), 8 Kbytes (SA/SP), or
without ROM/OTPROM/EPROM
s 16-bit Internal Code Fetch
s 64-Kbyte Extended Stack Space
s On-chip Data RAM Options:
1-Kbyte (SA/SB) or 512-Byte (SP/SQ)
s 8-bit, 2-clock External Code Fetch in
Page Mode
s Fast MCS 251 Instruction Pipeline
s User-selectable Configurations:
— External Wait States (0-3 wait states)
— Address Range & Memory Mapping
— Page Mode
s 32 Programmable I/O Lines
s Seven Maskable Interrupt Sources
with Four Programmable Priority
Levels
s Three Flexible 16-bit Timer/counters
s Hardware Watchdog Timer
s Programmable Counter Array
— High-speed Output
— Compare/Capture Operation
— Pulse Width Modulator
— Watchdog Timer
s Programmable Serial I/O Port
— Framing Error Detection
— Automatic Address Recognition
s High-performance CHMOS Technology
s Static Standby to 16-MHz Operation
s Complete System Development
Support
— Compatible with Existing Tools
— New MCS 251 Tools Available:
Compiler, Assembler, Debugger, ICE
s Package Options (PDIP, PLCC, and
Ceramic DIP)
A member of the Intel family of 8-bit MCS 251 microcontrollers, the 8XC251SA/SB/SP/SQ is binary-code
compatible with MCS 51 microcontrollers and pin compatible with 40-pin PDIP and 44-pin PLCC MCS 51
microcontrollers. MCS 251 microcontrollers feature an enriched instruction set, linear addressing, and
efficient C-language support. The 8XC251SA/SB/SP/SQ has 512 bytes or 1 Kbyte of on-chip RAM and is
available with 8 Kbytes or 16 Kbytes of on-chip ROM/OTPROM/EPROM, or without ROM/OTPROM/EPROM.
A variety of features can be selected by new user-programmable configurations.
COPYRIGHT © INTEL CORPORATION, 1996
May 1996
Order Number: 272783-003
Free Datasheet http://www.datasheet4u.com/

1 page




83C251SQ pdf
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
Table 2 lists the proliferation options. See Figure 2 for the 8XC251SA/SB/SP/SQ family nomenclature.
.
Table 2. Proliferation Options
8XC251SA/SB/SP/SQ
(0 – 16 MHz; 5 V ±10%)
80C251SB16
CPU-only
80C251SQ16
CPU-only
83C251SA16
ROM
83C251SB16
ROM
83C251SP16
ROM
83C251SQ16
ROM
87C251SA16
OTPROM/EPROM
87C251SB16
OTPROM/EPROM
87C251SP16
OTPROM/EPROM
87C251SQ16
OTPROM/EPROM
Table 3 lists the 8XC251SA/SB/SP/SQ packages.
Table 3. Package Information
Pkg.
Definition
N 44 ld. PLCC
Temperature
0°C to +70°C
P 40 ld. Plastic DIP
C 40 ld. Ceramic DIP
TN 44 ld. PLCC
TP 40 ld. Plastic DIP
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PRELIMINARY
5
Free Datasheet http://www.datasheet4u.com/

5 Page





83C251SQ arduino
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
Table 6. Signal Descriptions (Continued)
Signal
Name
Type
Description
Alternate
Function
P3.0
P3.1
P3.3:2
P3.5:4
P3.6
P3.7
I/O Port 3. This is an 8-bit, bidirectional I/O port with internal pullups.
RXD
TXD
INT1:0#
T1:0
WR#
RD#/A16
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
configuration byte UCONFIG0 (see RD# and Chapter 4, “Device Con-
figuration,” in the 8XC251SA/SB/SP/SQ Embedded Microcontroller
User’s Manual).
RD#
O Read or 17th Address Bit (A16). Read signal output to external data P3.7/A16
memory or 17th external address bit (A16), depending on the values of
bits RD0 and RD1 in configuration byte UCONFIG0. (See PSEN# and
Chapter 4, “Device Configuration,” in the 8XC251SA/SB/SP/SQ
Embedded Microcontroller User’s Manual).
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 inter-
nal pulldown resistor, which allows the device to be reset by connect-
ing 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 P3.0
0 and receives data in serial I/O modes 1, 2, and 3.
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 P1.0
is the external clock input. For the clock-out mode, it is the timer 2
clock output.
T2EX
I Timer 2 External Input. In timer 2 capture mode, a falling edge ini- P1.1
tiates 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.
TXD
O Transmit Serial Data. TXD outputs the shift clock in serial I/O mode 0 P3.1
and transmits serial data in serial I/O modes 1, 2, and 3.
VCC PWR Supply Voltage. Connect this pin to the +5V supply voltage.
VCC2
PWR
Secondary Supply Voltage 2. This supply voltage connection is pro-
vided 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, VSS2 can be uncon-
nected without loss of compatibility. (Not available on DIP)
The descriptions of A15:8/P2.7:0 and AD7:0/P0.7:0 are for the nonpage-mode chip configuration (com-
patible with 44-pin PLCC and 40-pin DIP MCS 51 microcontrollers). If the chip is configured for page-
mode operation, port 0 carries the lower address bits (A7:0), and port 2 carries the upper address bits
(A15:8) and the data (D7:0).
PRELIMINARY
11
Free Datasheet http://www.datasheet4u.com/

11 Page







PáginasTotal 30 Páginas
PDF Descargar[ Datasheet 83C251SQ.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
83C251SAHIGH-PERFORMANCE CHMOS MICROCONTROLLERIntel
Intel
83C251SBHIGH-PERFORMANCE CHMOS MICROCONTROLLERIntel
Intel
83C251SPHIGH-PERFORMANCE CHMOS MICROCONTROLLERIntel
Intel
83C251SQHIGH-PERFORMANCE CHMOS MICROCONTROLLERIntel
Intel

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar