C8051F121 Silicon Laboratories Inc, C8051F121 Datasheet - Page 307

• 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: -

X = Don’t care
*Note: SCA1-SCA0 and T1M bit definitions can be found in
X = Don’t care
*Note: SCA1-SCA0 and T1M bit definitions can be found in
Baud Rate
Baud Rate
230400
115200
230400
115200
Target
Target
57600
28800
14400
57600
28800
14400
(bps)
(bps)
9600
9600
2400
Table 22.4. Timer Settings for Standard Baud Rates Using the PLL
Table 22.5. Timer Settings for Standard Baud Rates Using the PLL
Baud Rate
Baud Rate
% Error
% Error
-0.01%
-0.01%
-0.47%
-0.01%
-0.01%
-0.01%
-0.01%
0.45%
0.22%
0.45%
0.45%
0.45%
0.22%
tor Divide
tor Divide
Oscilla-
Oscilla-
Factor
Factor
10464
20832
1736
3480
6912
1736
3480
5208
434
872
218
434
872
Frequency: 100.0 MHz
Frequency: 50.0 MHz
SYSCLK / 12
SYSCLK / 48
SYSCLK / 48
SYSCLK / 12
SYSCLK / 12
SYSCLK / 48
Timer Clock
Timer Clock
SYSCLK / 4
SYSCLK / 4
SYSCLK / 4
SYSCLK / 4
SYSCLK
SYSCLK
SYSCLK
Source
Rev. 1.4
Source
C8051F120/1/2/3/4/5/6/7
Section 23.1
Section 23.1
SCA1-SCA0
SCA1-SCA0
(pre-scale
(pre-scale
select)*
select)*
XX
XX
XX
01
01
00
10
10
01
01
00
00
10
C8051F130/1/2/3
.
.
T1M*
T1M*
1
0
0
0
0
0
1
1
0
0
0
0
0
Value (hex)
Value (hex)
Timer 1
Timer 1
Reload
Reload
0x6F
0x6F
0xB8
0x93
0x27
0x93
0x27
0x27
0x27
0x27
0x93
0x27
0x93
307