C8051F121 Silicon Laboratories Inc, C8051F121 Datasheet - Page 153

• Manufacturer Part Number: C8051F121
• Description: IC 8051 MCU FLASH 128K 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F12xr

Specifications of C8051F121

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 100MHz
• 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: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x8b, 8x12b; 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: -

Bits7–0: ACC: Accumulator.
Bits7–0: B: B Register.
ACC.7
R/W
R/W
B.7
Bit7
Bit7
This register is the accumulator for arithmetic operations.
This register serves as a second accumulator for certain arithmetic operations.
ACC.6
R/W
R/W
B.6
Bit6
Bit6
SFR Definition 11.10. ACC: Accumulator
ACC.5
R/W
R/W
B.5
Bit5
Bit5
SFR Definition 11.11. B: B Register
ACC.4
R/W
R/W
B.4
Bit4
Bit4
Rev. 1.4
ACC.3
R/W
R/W
B.3
Bit3
Bit3
C8051F120/1/2/3/4/5/6/7
ACC.2
R/W
R/W
B.2
Bit2
Bit2
C8051F130/1/2/3
ACC.1
R/W
R/W
B.1
Bit1
Bit1
SFR Address:
SFR Address:
SFR Page:
SFR Page:
ACC.0
R/W
R/W
B.0
Bit0
Bit0
0xE0
All Pages
0xF0
All Pages
00000000
Addressable
00000000
Addressable
Reset Value
Reset Value
Bit
Bit
153