C8051F011 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

C8051F011

Mixed-Signal 32KB ISP FLASH MCU Family

Unspecified 

PRELIMINARY

C8051F000/1/2/5/6/7

C8051F010/1/2/5/6/7

1.2. On-Board Memory

The CIP-51 has a standard 8051 program and data address configuration. It includes 256 bytes of data RAM, with

the upper 128 bytes dual-mapped. Indirect addressing accesses the upper 128 bytes of general purpose RAM, and

direct addressing accesses the 128 byte SFR address space. The lower 128 bytes of RAM are accessible via direct

and indirect addressing. The first 32 bytes are addressable as four banks of general-purpose registers, and the next

16 bytes can be byte addressable or bit addressable.

The CIP-51 in the C8051F005/06/07/15/16/17 MCUs additionally has a 2048 byte RAM block in the external data

memory address space. This 2048 byte block can be addressed over the entire 64k external data memory address

range (see Figure 1.6).

The MCU’s program memory consists of 32k + 128 bytes of FLASH. This memory may be reprogrammed in-

system in 512 byte sectors, and requires no special off-chip programming voltage. The 512 bytes from addresses

0x7E00 to 0x7FFF are reserved for factory use. There is also a single 128-byte sector at address 0x8000 to 0x807F,

which may be useful as a small table for software constants or as additional program space. See Figure 1.6 for the

MCU system memory map.

Figure 1.6. On-Board Memory Map

PROGRAM MEMORY

0x807F

0x8000

0x7FFF

0x7E00

0x7DFF

128 Byte ISP FLASH

RESERVED

FLASH

(In-System

Programmable in 512

Byte Sectors)

0x0000

0xFF

0x80

0x7F

0x30

0x2F

0x20

0x1F

0x00

DATA MEMORY

INTERNAL DATA ADDRESS SPACE

Upper 128 RAM

(Indirect Addressing

Only)

Special Function

Register's

(Direct Addressing Only)

(Direct and Indirect

Addressing)

Bit Addressable

General Purpose

Registers

Lower 128 RAM

(Direct and Indirect

Addressing)

EXTERNAL DATA ADDRESS SPACE

0xFFFF

0xF800 (same 2048 byte RAM block )

0x17FF

0x1000

0x0FFF

0x0800

0x07FF

0x0000

(same 2048 byte RAM block )

(same 2048 byte RAM block )

RAM - 2048 Bytes

(accessable using MOVX

instruction)

The same 2048 byte RAM

block can be addressed on

2k boundaries throughout

the 64k External Data

Memory space.

Page 14

CYGNAL Integrated Products, Inc.  2001

4.2001; Rev. 1.3

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