C8051F310 datasheet(79/228 Pages) SILABS

79 / 228 page

Rev. 1.7

C8051F310/1/2/3/4/5/6/7

CIP-51 Microcontroller

The MCU system controller core is the CIP-51 microcontroller. The CIP-51 is fully compatible with the

MCS-51™ instruction set; standard 803x/805x assemblers and compilers can be used to develop soft-

ware. The MCU family has a superset of all the peripherals included with a standard 8051. Included are

four 16-bit counter/timers (see description in Section 17), an enhanced full-duplex UART (see description

in Section 15), an Enhanced SPI (see description in Section 16), 256 bytes of internal RAM, 128 byte

Special Function Register (SFR) address space (Section 8.2.6), and 29 Port I/O (see description in Sec-

tion 13). The CIP-51 also includes on-chip debug hardware (see description in Section 20), and interfaces

directly with the analog and digital subsystems providing a complete data acquisition or control-system

solution in a single integrated circuit.

The CIP-51 Microcontroller core implements the standard 8051 organization and peripherals as well as

additional custom peripherals and functions to extend its capability (see Figure 8.1 for a block diagram).

The CIP-51 includes the following features:

Figure 8.1. CIP-51 Block Diagram

- Fully Compatible with MCS-51 Instruction

Set

- 25 MIPS Peak Throughput with 25 MHz

Clock

- 0 to 25 MHz Clock Frequency

- 256 Bytes of Internal RAM

- 29 Port I/O

- Extended Interrupt Handler

- Reset Input

- Power Management Modes

- On-chip Debug Logic

- Program and Data Memory Security

DATA BUS

TMP1

TMP2

PRGM. ADDRESS REG.

PC INCREMENTER

ALU

PSW

DATA BUS

MEMORY

INTERFACE

MEM_ADDRESS

PIPELINE

BUFFER

DATA POINTER

INTERRUPT

INTERFACE

SYSTEM_IRQs

EMULATION_IRQ

MEM_CONTROL

CONTROL

LOGIC

A16

PROGRAM COUNTER (PC)

STOP

CLOCK

RESET

IDLE

POWER CONTROL

SFR

BUS

INTERFACE

SFR_ADDRESS

SFR_CONTROL

SFR_WRITE_DATA

SFR_READ_DATA

B REGISTER

ACCUMULATOR

MEM_WRITE_DATA

MEM_READ_DATA

SRAM

ADDRESS

SRAM

(256 X 8)

STACK POINTER

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