C8051F321-GM Silicon Laboratories Inc, C8051F321-GM Datasheet - Page 21

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

Specifications of C8051F321-GM

• Program Memory Type: FLASH
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• 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
• 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
• 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
• Operating Supply Voltage: 2.7 V to 3.6 V
• 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: 13-ch x 10-bit or 17-ch x 10-bit
• No. Of I/o's: 21
• Ram Memory Size: 1280Byte
• Cpu Speed: 25MHz
• No. Of Timers: 4
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1480 - DAUGHTER CARD TOOLSTCK C8051F321770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1261

The USB Transceiver is USB 2.0 compliant, and includes on-chip matching and pull-up resistors. The pull-
up resistors can be enabled/disabled in software, and will appear on the D+ or D– pin according to the soft-
ware-selected speed setting (Full or Low Speed).
1.4.
C8051F320/1 devices include a 5-to-3 V voltage regulator (REG0). When enabled, the REG0 output
appears on the VDD pin and can be used to power external devices. REG0 can be enabled/disabled by
software.
1.5.
The C8051F320/1 devices include on-chip Silicon Labs 2-Wire (C2) debug circuitry that provides non-intru-
sive, full speed, in-circuit debugging of the production part installed in the end application.
Silicon Labs' debugging system supports inspection and modification of memory and registers, break-
points, and single stepping. No additional target RAM, program memory, timers, or communications chan-
nels are required. All the digital and analog peripherals are functional and work correctly while debugging.
All the peripherals (except for the USB, ADC, and SMBus) are stalled when the MCU is halted, during sin-
gle stepping, or at a breakpoint in order to keep them synchronized.
The C8051F320DK development kit provides all the hardware and software necessary to develop applica-
tion code and perform in-circuit debugging with the C8051F320/1 MCUs. The kit includes software with a
developer's studio and debugger, 8051 assembler and linker, evaluation ‘C’ compiler, and a debug
adapter. It also has a target application board with the C8051F320 MCU installed, the necessary cables for
connection to a PC, and a wall-mount power supply. The development kit contents may also be used to
program and debug the device on the production PCB using the appropriate connections for the program-
ming pins.
The Silicon Labs IDE interface is a vastly superior developing and debugging configuration, compared to
standard MCU emulators that use on-board "ICE Chips" and require the MCU in the application board to
D+
D-
Voltage Regulator
On-Chip Debug Circuitry
VDD
Transceiver
Figure 1.5. USB Controller Block Diagram
Transfer
Control
Data
Serial Interface Engine (SIE)
Rev. 1.4
IN
Endpoint0
Endpoint1
IN/OUT
IN
USB FIFOs
Endpoint2
(1k RAM)
IN
Endpoint3
OUT
OUT
OUT
Status, and
Registers
Interrupt
Control,
USB
C8051F320/1
CIP-51 Core
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