C8051F340-GQR Silicon Laboratories Inc, C8051F340-GQR Datasheet - Page 80

• Manufacturer Part Number: C8051F340-GQR
• Description: MCU 8-Bit C8051F34x 8051 CISC 64KB Flash 3.3V/5V 48-Pin TQFP T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F340-GQR

• Package: 48TQFP
• Device Core: 8051
• Family Name: C8051F34x
• Maximum Speed: 48 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 40
• Interface Type: I2C/SMBus/SPI/UART/USB
• On-chip Adc: 17-chx10-bit
• Number Of Timers: 4
• Ram Size: 4.25 KB
• Program Memory Size: 64 KB
• Program Memory Type: Flash
• Operating Temperature: -40 to 85 °C

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
9.2.1. Program Memory
The CIP-51 core has a 64k-byte program memory space. The C8051F34x implements 64k or 32k bytes of
this program memory space as in-system, re-programmable Flash memory. Note that on the 64k versions
of the C8051F34x, addresses above 0xFBFF are reserved.
Program memory is normally assumed to be read-only. However, the CIP-51 can write to program memory
by setting the Program Store Write Enable bit (PSCTL.0) and using the MOVX instruction. This feature pro-
vides a mechanism for the CIP-51 to update program code and use the program memory space for
non-volatile data storage. Refer to
80
0x7FFF
0x0000
PROGRAM/DATA MEMORY
Programmable in 512
Byte Sectors)
(In-System
(FLASH)
FLASH
Figure 9.3. On-Chip Memory Map for 32 kB Devices
Section “12. Flash Memory” on page 107
0xFFFF
0x07FF
0x0800
0x0000
0xFF
0x80
0x7F
0x30
0x2F
0x20
0x1F
0x00
XRAM - 2048 Bytes
(Available only on devices
(Accessable using MOVX
(Indirect Addressing
(Direct and Indirect
Off-Chip XRAM
Rev. 1.3
INTERNAL DATA ADDRESS SPACE
EXTERNAL DATA ADDRESS SPACE
General Purpose
Upper 128 RAM
Bit Addressable
Addressing)
instruction)
Registers
with EMIF)
Only)
DATA MEMORY (RAM)
(Direct Addressing Only)
Special Function
Lower 128 RAM
(Direct and Indirect
Addressing)
Register's
USB FIFOs
1024 Bytes
for further details.
0x07FF
0x0400