C8051F321-GMR Silicon Laboratories Inc, C8051F321-GMR Datasheet - Page 77

• Manufacturer Part Number: C8051F321-GMR
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321-GMR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 21
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2.25 KB
• Interface Type: I2C, SMBus, SPI, UART, USB
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F320DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 13 Channel / 10 bit, 7 Channel
• Package: 28MLP
• Device Core: 8051
• Family Name: C8051F321
• Maximum Speed: 25 MHz
• Operating Supply Voltage: 3.3 V
• For Use With: 336-1480 - DAUGHTER CARD TOOLSTCK C8051F321336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

9.2.
The memory organization of the CIP-51 System Controller is similar to that of a standard 8051. There are
two separate memory spaces: program memory and data memory. Program and data memory share the
same address space but are accessed via different instruction types. The CIP-51 memory organization is
shown in Figure 9.2.
9.2.1. Program Memory
The CIP-51 core has a 64k-byte program memory space. The C8051F320/1 implements 16k bytes of this
program memory space as in-system, re-programmable Flash memory, organized in a contiguous block
from addresses 0x0000 to 0x3FFF. Addresses above 0x3DFF 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 Section “11. Flash Memory” on page 106 for further details.
0x3DFF
0x3E00
0x0000
Memory Organization
PROGRAM/DATA MEMORY
Programmable in 512
Byte Sectors)
RESERVED
16 K Flash
(In-System
(Flash)
Figure 9.2. Memory Map
0xFFFF
0x07FF
0x03FF
0x0800
0x0400
0x0000
0xFF
0x7F
0x2F
0x1F
0x80
0x30
0x20
0x00
Rev. 1.4
0x0000 to 0x07FF, wrapped
XRAM - 1024 Bytes
Same 2048 bytes as from
(accessable using MOVX
(Indirect Addressing
(Direct and Indirect
INTERNAL DATA ADDRESS SPACE
EXTERNAL DATA ADDRESS SPACE
on 2 kB boundaries
General Purpose
Upper 128 RAM
Bit Addressable
USB FIFOs
1024 Bytes
Addressing)
instruction)
Registers
Only)
DATA MEMORY (RAM)
(Direct Addressing Only)
C8051F320/1
Special Function
Lower 128 RAM
(Direct and Indirect
Addressing)
Register's
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