CCAP0H CCAP1H CCAP2H CCAP3H CCAP4H | Intel Embedded Microcontroller

8XC251SA, SB, SP, SQ USER’S MANUAL

Table C-1. 8XC251SA, SB, SP, SQ SFR Map

0/8	1/9	2/A	3/B	4/C	5/D	6/E	7/F

	CH	CCAP0H	CCAP1H	CCAP2H	CCAP3H	CCAP4H
	00000000	xxxxxxxx	xxxxxxxx	xxxxxxxx	xxxxxxxx	xxxxxxxx
B
00000000
	CL	CCAP0L	CCAP1L	CCAP2L	CCAP3L	CCAP4L
	00000000	xxxxxxxx	xxxxxxxx	xxxxxxxx	xxxxxxxx	xxxxxxxx
ACC
00000000
CCON	CMOD	CCAPM0	CCAPM1	CCAPM2	CCAPM3	CCAPM4
00x00000	00xxx000	x0000000	x0000000	x0000000	x0000000	x0000000
PSW	PSW1
00000000	00000000
T2CON	T2MOD	RCAP2L	RCAP2H	TL2	TH2
00000000	xxxxxx00	00000000	00000000	00000000	00000000

IPL0	SADEN					SPH
x0000000	00000000					00000000
P3							IPH0
11111111							x0000000
IE0	SADDR
00000000	00000000
P2						WDTRST	WCON
11111111						xxxxxxxx	xxxxxx00
SCON	SBUF
00000000	xxxxxxxx
P1
11111111
TCON	TMOD	TL0	TL1	TH0	TH1
00000000	00000000	00000000	00000000	00000000	00000000
P0	SP	DPL	DPH	DPXL			PCON
11111111	00000111	00000000	00000000	00000001			00xx0000
0/8	1/9	2/A	3/B	4/C	5/D	6/E	7/F

NOTE: Shaded areas represent unimplemented SFR locations. Locations S:000H–S:07FH and S:100H–S:1FFH are also unimplemented.

C-2

Embedded Microcontroller, 8XC251SP, 8XC251SA, 8XC251SQ, 8XC251SB 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.

Intel Embedded Microcontroller, 8XC251SA, 8XC251SP, 8XC251SQ Table C-1 XC251SA, SB, SP, SQ SFR Map

Models: Embedded Microcontroller 8XC251SP 8XC251SA 8XC251SQ 8XC251SB

8XC251SA, SB, SP, SQ USER’S MANUAL

Table C-1. 8XC251SA, SB, SP, SQ SFR Map

CCAP0H

CCAP1H

CCAP2H

CCAP3H

CCAP4H

SPH

SADDR

DPH

DPXL

Embedded Microcontroller, 8XC251SP, 8XC251SA, 8XC251SQ, 8XC251SB specifications