C8051F311 Silicon Laboratories Inc, C8051F311 Datasheet - Page 139

IC 8051 MCU 16K FLASH 28MLP

C8051F311

Manufacturer Part Number
C8051F311
Description
IC 8051 MCU 16K FLASH 28MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F31xr
Datasheets

Specifications of C8051F311

Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
25
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 17x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-

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Note:
Bits7–0: Output Configuration Bits for P1.7-P1.0 (respectively): ignored if corresponding bit in regis-
Bits7–0: P1SKIP[7:0]: Port1 Crossbar Skip Enable Bits.
Note:
R/W
R/W
Bit7
Bit7
Only P1.0–P1.5 are associated with Port pins on the C8051F316/7 devices.
ter P1MDIN is logic 0.
0: Corresponding P1.n Output is open-drain.
1: Corresponding P1.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 P1.n pin is not skipped by the Crossbar.
1: Corresponding P1.n pin is skipped by the Crossbar.
Only P1.0–P1.5 are associated with Port pins on the C8051F316/7 devices. Hence, in C8051F316/7
devices, user code writing to this SFR should always set P1SKIP[7:6] = 11b so that those two pins are
skipped by the crossbar decoder.
R/W
Bit6
R/W
Bit6
SFR Definition 13.9. P1MDOUT: Port1 Output Mode
SFR Definition 13.10. P1SKIP: Port1 Skip
R/W
Bit5
R/W
Bit5
R/W
Bit4
R/W
Bit4
R/W
Bit3
Rev. 1.7
R/W
Bit3
C8051F310/1/2/3/4/5/6/7
R/W
Bit2
R/W
Bit2
R/W
Bit1
R/W
Bit1
R/W
Bit0
R/W
Bit0
‘F310/1/2/3/4/5:
SFR Address:
00000000
Reset Value
11000000
‘F316/7:
SFR Address:
00000000
0xD5
Reset Value
0xA5
139

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