C8051F321R Silicon Laboratories Inc, C8051F321R Datasheet - Page 46

• Manufacturer Part Number: C8051F321R
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321R

• 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
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• 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
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 336-1067-2

C8051F320/1
46
Bits7-5:
Bits4-0:
†Only applies to C8051F320; selection RESERVED on C8051F321 devices.
Bit7
R
-
UNUSED. Read = 000b; Write = don’t care.
AMX0N4-0: AMUX0 Negative Input Selection.
Note that when GND is selected as the Negative Input, ADC0 operates in Single-ended mode. For all
other Negative Input selections, ADC0 operates in Differential mode.
10001 - 11101
Figure 5.6. AMX0N: AMUX0 Negative Channel Select Register
AMX0N4-0
Bit6
R
-
01100†
01101†
01110†
01111†
00000
00001
00010
00011
00100
00101
00110
01000
01001
01010
01011
10000
00111
11110
11111
Bit5
R
-
GND (ADC in Single-Ended Mode)
AMX0N4 AMX0N3 AMX0N2 AMX0N1 AMX0N0 00000000
R/W
Bit4
ADC0 Negative Input
RESERVED
Rev. 1.1
VREF
P2.4†
P2.5†
P2.6†
P2.7†
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P2.0
P2.1
P2.2
P2.3
P3.0
R/W
Bit3
R/W
Bit2
R/W
Bit1
R/W
Bit0
SFR Address:
Reset Value
0xBA