C8051F220 Silicon Laboratories Inc, C8051F220 Datasheet - Page 131

• Manufacturer Part Number: C8051F220
• Description: IC 8051 MCU 8K FLASH 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F2xxr

Specifications of C8051F220

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 32x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Bits7–6: UNUSED. Read = 00b, Write = don't care.
Bit5:
Bit4:
Bit3:
Bits2–0: UNUSED. Read = 000b, Write = don't care.
R/W
Bit7
-
T2M: Timer 2 Clock Select.
This bit controls the division of the system clock supplied to Timer 2. This bit is ignored
when the timer is in baud rate generator mode or counter mode (i.e. C/T2 = 1).
0: Timer 2 uses the system clock divided by 12.
1: Timer 2 uses the system clock.
T1M: Timer 1 Clock Select.
This bit controls the division of the system clock supplied to Timer 1.
0: Timer 1 uses the system clock divided by 12.
1: Timer 1 uses the system clock.
T0M: Timer 0 Clock Select.
This bit controls the division of the system clock supplied to Counter/Timer 0.
0: Counter/Timer uses the system clock divided by 12.
1: Counter/Timer uses the system clock.
R/W
Bit6
-
SFR Definition 17.3. CKCON: Clock Control
T2M
R/W
Bit5
T1M
R/W
Bit4
Rev. 1.6
T0M
R/W
Bit3
R/W
Bit2
-
R/W
Bit1
-
C8051F2xx
R/W
Bit0
-
SFR Address:
Reset Value
00000000
0x8E
131