C8051F351 Silicon Laboratories Inc, C8051F351 Datasheet - Page 93

• Manufacturer Part Number: C8051F351
• Description: IC 8051 MCU 8K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F35xr

Specifications of C8051F351

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x24b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

11.
The memory organization of the C8051F350/1/2/3 is similar to that of a standard 8051. There are two sep-
arate memory spaces: program memory and data memory. Program and data memory share the same
address space but are accessed via different instruction types. The memory map is shown in Figure 11.1.
11.1. Program Memory
The CIP-51 core has a 64k-byte program memory space. The C8051F350/1/2/3 implements 8k bytes of
this program memory space as in-system, re-programmable Flash memory, organized in a contiguous
block from addresses 0x0000 to 0x1DFF. Addresses above 0x1DFF are reserved.
Program memory is normally assumed to be read-only. However, the C8051F350/1/2/3 can write to pro-
gram memory by setting the Program Store Write Enable bit (PSCTL.0) and using the MOVX write instruc-
tion. This feature provides a mechanism for updates to program code and use of the program memory
space for non-volatile data storage. Refer to
0x1DFF
0x1FFF
0x1E00
0x0000
Memory Organization and SFRs
PROGRAM/DATA MEMORY
Programmable in 512
Byte Sectors)
RESERVED
(In-System
8K FLASH
(FLASH)
Figure 11.1. Memory Map
0xFFFF
0x01FF
0x0200
0x0000
0xFF
0x7F
0x2F
0x1F
0x80
0x30
0x20
0x00
Section “15. Flash Memory” on page 117
Rev. 0.4
0x0000 to 0x01FF, wrapped
XRAM - 512 Bytes
(accessable using MOVX
Same 512 bytes as from
(Indirect Addressing
on 512-byte boundaries
(Direct and Indirect
INTERNAL DATA ADDRESS SPACE
EXTERNAL DATA ADDRESS SPACE
General Purpose
Upper 128 RAM
Bit Addressable
Addressing)
instruction)
Registers
Only)
DATA MEMORY (RAM)
C8051F350/1/2/3
(Direct Addressing Only)
Special Function
Lower 128 RAM
(Direct and Indirect
Addressing)
Register's
for further details.
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