C8051F321-GM Silicon Laboratories Inc, C8051F321-GM Datasheet - Page 136

• 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

C8051F320/1
136
Bits7–0: Analog Input Configuration Bits for P2.7–P2.0 (respectively).
Note: P2.7–P2.4 only available on C8051F320 devices.
Bits7–0: Output Configuration Bits for P2.7–P2.0 (respectively): ignored if corresponding bit in regis-
Note: P2.7–P2.4 only available on C8051F320 devices.
Bits7–4: Unused. Read = 0000b. Write = don’t care.
Bits3–0: P2SKIP[3:0]: Port2 Crossbar Skip Enable Bits.
R/W
R/W
R/W
Bit7
Bit7
Bit7
-
Port pins configured as analog inputs have their weak pull-up, digital driver, and digital
receiver disabled.
0: Corresponding P2.n pin is configured as an analog input.
1: Corresponding P2.n pin is not configured as an analog input.
ter P2MDIN is logic 0.
0: Corresponding P2.n Output is open-drain.
1: Corresponding P2.n Output is push-pull.
These bits select Port pins to be skipped by the Crossbar Decoder. Port pins used as ana-
log inputs (for ADC or Comparator) or used as special functions (VREF input, external oscil-
lator circuit, CNVSTR input) should be skipped by the Crossbar.
0: Corresponding P2.n pin is not skipped by the Crossbar.
1: Corresponding P2.n pin is skipped by the Crossbar.
SFR Definition 14.13. P2MDOUT: Port2 Output Mode Register
SFR Definition 14.12. P2MDIN: Port2 Input Mode Register
R/W
R/W
R/W
Bit6
Bit6
Bit6
-
SFR Definition 14.14. P2SKIP: Port2 Skip Register
R/W
R/W
R/W
Bit5
Bit5
Bit5
-
R/W
R/W
R/W
Bit4
Bit4
Bit4
-
Rev. 1.4
R/W
R/W
R/W
Bit3
Bit3
Bit3
R/W
R/W
R/W
Bit2
Bit2
Bit2
R/W
R/W
R/W
Bit1
Bit1
Bit1
R/W
R/W
R/W
Bit0
Bit0
Bit0
SFR Address:
SFR Address:
SFR Address:
00000000
Reset Value
00000000
Reset Value
Reset Value
11111111
0xF3
0xD6
0xA6