Intel 8xC251TB, 8XC251SA, 8XC251SP, 8XC251SQ, 8xC251TQ, 8XC251SB Special Function Register SFR Map

Page 12

8xC251Tx Hardware Description

Table 3. Special Function Register (SFR) Map

F8

 

CH00000

CCAP0Hx

CCAP1Hx

CCAP2Hx

CCAP3Hx

CCAP4Hx

 

 

000

xxxxxxx

xxxxxxx

xxxxxxx

xxxxxxx

xxxxxxx

 

 

 

 

 

 

 

 

 

 

 

 

 

F0

B

 

 

 

 

 

 

 

 

00000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E8

 

CL

CCAP0L

CCAP1L

CCAP2L

CCAP3L

CCAP4L

 

 

 

00000000

xxxxxxxx

xxxxxxxx

xxxxxxxx

xxxxxxxx

xxxxxxxx

 

 

 

 

 

 

 

 

 

 

E0

ACC

 

 

 

 

 

 

 

 

00000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D8

CCON

CMOD

CCAPM0

CCAPM1

CCAPM2

CCAPM3

CCAPM4

 

 

00x00000

00xxx000

x0000000

x0000000

x0000000

x0000000

x0000000

 

 

 

 

 

 

 

 

 

 

D0

PSW

PSW1

 

 

 

 

 

 

 

00000000

00000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C8

T2CON

T2MOD

RCAP2L

RCAP2H

TL2

TH2

 

 

 

00000000

xxxxxx00

00000000

00000000

00000000

00000000

 

 

 

 

 

 

 

 

 

 

 

C0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B8

IPL0

SADEN

SADEN1

 

 

 

SPH

 

 

x0000000

00000000

00000000

 

 

 

00000000

 

 

 

 

 

 

 

 

 

 

B0

P3

IE1

IP1L

IP1H

 

 

 

IPH0

 

11111111

xxxxxxx0

xxxxxxx0

xxxxxxx0

 

 

 

x0000000

 

 

 

 

 

 

 

 

 

A8

IE0

SADDR

SADDR1

 

 

 

 

 

 

00000000

00000000

00000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A0

P2

 

 

 

 

 

WDTRST

WCON

 

11111111

 

 

 

 

 

xxxxxxxx

xxxxxxxx

 

 

 

 

 

 

 

 

 

98

SCON

SBUF

SCON1

SBUF1

 

 

 

 

 

00000000

xxxxxxxx

00000000

xxxxxxxx

 

 

 

 

 

 

 

 

 

 

 

 

 

90

P1

 

 

 

 

 

 

 

 

11111111

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

88

TCON000

TMOD

TL0

TL1

TH0

TH1

 

BGCON

 

00000

00000000

00000000

00000000

00000000

00000000

 

0000xxxx

 

 

 

 

 

 

 

 

 

80

P0

SP

DPL

DPH

DPXL

 

 

PCON

 

11111111

00000111

00000000

00000000

00000001

 

 

00xx0000

 

 

 

 

 

 

 

 

 

NOTE: Registers in this font are special functions registers that are associated with the second serial I/O port.

6

Image 12
Contents 8xC251TB, 8xC251TQ, Hardware Description Page Date DescriptionDecember 273138-002 8xC251TB, 8xC251TQ Hardware Description 8xC251Tx Hardware Description XC251Tx Block Diagram OTPROM/EPROMXC251Tx Signal Summary Power & Ground NameAddress & Data Name Processor Control NameXC251Tx Signal Descriptions Sheet 1 Signal Type Description Alternate Name FunctionAddress Line 16. See RD# XC251Tx Signal Descriptions Sheet 2 Timer 10 External Clock Inputs. When Timer 10 operates as aXC251Tx Signal Descriptions Sheet 3 SignalDescription Alternate Name Function GNDSpecial Function Register SFR Map CH00000 CCAP0Hx CCAP1Hx CCAP2Hx CCAP3Hx CCAP4Hx XxxxxxxSecond Serial I/O Port Signals Function Type Description MultiplexedSecond Serial I/O Port Special Function Registers Mnemonic Description AddressBit Number Function Mnemonic Bit Number Bit Mne Function Monic Bit Number IPH1.0 IPL1.0 Priority LevelUCONFIG1 bit definitions for the 8xC251Tx Interrupt ModeReserved for Internal or Future Use Extended Data Float TimingsSummary of the EDF# and WSB#10 Configuration Options WSB#10 Wait State Extended Data Float
Related manuals
Manual 458 pages 25.38 Kb

8XC251SP, 8XC251SA, 8XC251SQ, 8xC251TB, 8xC251TQ specifications

The Intel 8XC251 series of embedded microcontrollers is a family of versatile and powerful devices, designed to meet the demands of a wide range of applications. With models such as the 8XC251SB, 8XC251SQ, 8XC251SA, and 8XC251SP, this series offers unique features while maintaining a high level of performance and reliability.

At the heart of the 8XC251 microcontrollers is the 8051 architecture, which provides a 16-bit processor capable of executing complex instructions efficiently. This architecture not only allows for a rich instruction set but also facilitates programming in assembly language and higher-level languages like C, which are essential for developing sophisticated embedded systems.

One of the significant features of the 8XC251 family is its integrated peripherals, including timer/counters, serial communication interfaces, and interrupt systems. These peripherals enable developers to implement timing functions, data communication, and real-time processing, all of which are crucial in modern embedded applications. The 8XC251SB and 8XC251SQ models, for instance, come equipped with multiple I/O ports that allow for interfacing with other devices and systems, enhancing their functionality in various environments.

The memory architecture of the 8XC251 devices is noteworthy, featuring on-chip ROM, RAM, and EEPROM. The on-chip memory allows for fast access times, which is essential for executing programs efficiently. Moreover, the EEPROM serves as non-volatile memory, enabling the storage of configuration settings and important data that must be retained even when power is lost.

In terms of operating voltage, the 8XC251 devices are designed to operate in a wide range, typically between 4.0V and 6.0V. This flexibility makes them suitable for battery-powered applications, where energy efficiency is critical. The power management features, including reduced power modes, further enhance their suitability for portable devices.

Lastly, the 8XC251 series is supported by a wide range of development tools and resources, allowing engineers and developers to streamline the development process. This support, combined with the microcontrollers' robust features, makes the Intel 8XC251 family a reliable choice for various embedded applications, such as industrial automation, automotive systems, and consumer electronics.

Overall, the Intel 8XC251SB, 8XC251SQ, 8XC251SA, and 8XC251SP deliver high performance, versatility, and ease of use, making them a preferred choice for embedded system designers looking to develop efficient and effective solutions.