C8051F317-GMR Silicon Laboratories Inc, C8051F317-GMR Datasheet - Page 140

• Manufacturer Part Number: C8051F317-GMR
• Description: MCU 8-Bit C8051F31x 8051 CISC 16KB Flash 3.3V 24-Pin QFN EP T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F317-GMR

• Package: 24QFN EP
• Device Core: 8051
• Family Name: C8051F31x
• Maximum Speed: 25 MHz
• Ram Size: 1.25 KB
• Program Memory Size: 16 KB
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 21
• Interface Type: I2C/SMBus/SPI/UART
• On-chip Adc: 17-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 4

C8051F310/1/2/3/4/5/6/7
140
Note:
Bits7–0: P2.[7:0]
Note:
Bits7–0: Analog Input Configuration Bits for P2.7–P2.0 (respectively).
P2.7
R/W
R/W
Bit7
Bit7
Only P2.0–P2.5 are associated with Port pins on the C8051F316/7 devices.
Write - Output appears on I/O pins per Crossbar Registers.
0: Logic Low Output.
1: Logic High Output (high impedance if corresponding P2MDOUT.n bit = 0).
Read - Always reads ‘1’ if selected as analog input in register P2MDIN. Directly reads Port
pin when configured as digital input.
0: P2.n pin is logic low.
1: P2.n pin is logic high.
Only P2.0–P2.5 are associated with Port pins on the C8051F316/7 devices.
Port pins configured as analog inputs have their weak pullup, 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.
P2.6
R/W
R/W
Bit6
Bit6
SFR Definition 13.12. P2MDIN: Port2 Input Mode
P2.5
R/W
R/W
Bit5
Bit5
SFR Definition 13.11. P2: Port2
P2.4
R/W
R/W
Bit4
Bit4
Rev. 1.7
P2.3
R/W
R/W
Bit3
Bit3
P2.2
R/W
R/W
Bit2
Bit2
P2.1
R/W
R/W
Bit1
Bit1
(bit addressable)
P2.0
R/W
R/W
Bit0
Bit0
SFR Address:
SFR Address:
Reset Value
Reset Value
11111111
11111111
0xA0
0xF3