C8051F321-GM Silicon Laboratories Inc, C8051F321-GM Datasheet - Page 83

• 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

SFRs are listed in alphabetical order. All undefined SFR locations are reserved.
9.2.7. Register Descriptions
Following are descriptions of SFRs related to the operation of the CIP-51 System Controller. Reserved bits
should not be set to logic l. Future product versions may use these bits to implement new features in which
case the reset value of the bit will be logic 0, selecting the feature's default state. Detailed descriptions of
the remaining SFRs are included in the sections of the datasheet associated with their corresponding sys-
tem function.
TMR2RLL
TMR3CN
TMR3H
TMR3L
TMR3RLH
TMR3RLL
USB0ADR
USB0DAT
USB0XCN
VDM0CN
XBR0
XBR1
0x84–0x86, 0xAB-0xAF,
0xB4, 0xB5, 0xBF, 0xC7,
0xCE, 0xCF, 0xD2, 0xD3,
0xDF, 0xE3, 0xE5, 0xF5
Bits7–0: DPL: Data Pointer Low.
Register
R/W
Bit7
The DPL register is the low byte of the 16-bit DPTR. DPTR is used to access indirectly
addressed memory.
R/W
Bit6
Address
0xCA
0xD7
0xFF
0xE1
0xE2
0x91
0x95
0x94
0x93
0x92
0x96
0x97
Table 9.3. Special Function Registers (Continued)
SFR Definition 9.1.
R/W
Bit5
Timer/Counter 2 Reload Low
Timer/Counter 3Control
Timer/Counter 3 High
Timer/Counter 3Low
Timer/Counter 3 Reload High
Timer/Counter 3 Reload Low
USB0 Indirect Address Register
USB0 Data Register
USB0 Transceiver Control
VDD Monitor Control
Port I/O Crossbar Control 0
Port I/O Crossbar Control 1
Reserved
R/W
Bit4
DPL: Data Pointer Low Byte
Rev. 1.4
R/W
Bit3
Description
R/W
Bit2
R/W
Bit1
C8051F320/1
R/W
Bit0
SFR Address:
00000000
Reset Value
0x82
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