C8051F023R Silicon Laboratories Inc, C8051F023R Datasheet - Page 68

• Manufacturer Part Number: C8051F023R
• Description: IC 8051 MCU 64K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F02xr

Specifications of C8051F023R

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x8b, 8x10b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 336-1035-2

C8051F022/3
68
VREF * (1023/1024)
AIN0-AGND (Volts)
AIN0-AGND (Volts)
VREF * (511/1024)
10-bit ADC Data Word appears in the ADC Data Word Registers as follows:
ADC0H[1:0]:ADC0L[7:0], if ADLJST = 0
ADC0H[7:0]:ADC0L[7:6], if ADLJST = 1
Example: ADC Data Word Conversion Map, AIN0 Input in Single-Ended Mode
Example: ADC Data Word Conversion Map, AIN0-AIN1 Differential Input Pair
ADLJST = 0:
Code
VREF * (511/512)
-VREF * (1/512)
VREF * (1/512)
-VREF / 2
VREF / 2
VREF / 2
-VREF
=
(ADC0H[7:2] will be sign-extension of ADC0H.1 for a differential reading, otherwise =
000000b).
(ADC0L[5:0] = 000000b).
(AMX0CF = 0x00, AMX0SL = 0x00)
0
(AMX0CF = 0x01, AMX0SL = 0x00)
0
Figure 6.11. ADC0 Data Word Example (C8051F022/3)
Vin

-------------- -
VREF
Gain
ADC0H:ADC0L
ADC0H:ADC0L
0xFE00 (-512)
(ADLJST = 0)
(ADLJST = 0)
0xFF00 (-256)
0xFFFF (-1)

0x03FF
0x01FF
0x01FF
0x0200
0x0000
0x0100
0x0001
0x0000
2
n
; ‘n’ = 10 for Single-Ended; ‘n’=9 for Differential.
Rev. 1.4
ADC0H:ADC0L
ADC0H:ADC0L
(ADLJST = 1)
(ADLJST = 1)
0xFFC0
0x7FC0
0x7FC0
0xFFC0
0xC000
0x8000
0x0000
0x4000
0x0040
0x0000
0x8000