C8051F321 Silicon Laboratories Inc, C8051F321 Datasheet - Page 202

• Manufacturer Part Number: C8051F321
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321

• 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: -

C8051F320/1
202
Table 17.5. Timer Settings for Standard Baud Rates Using an External Oscillator
Table 17.6. Timer Settings for Standard Baud Rates Using an External Oscillator
Frequency: 11.0592 MHz
Target
Baud Rate
(bps)
Frequency: 3.6864 MHz
Target
Baud Rate
(bps)
230400
115200
230400
115200
230400
115200
230400
115200
57600
28800
14400
57600
28800
14400
57600
28800
14400
57600
28800
14400
9600
2400
1200
9600
9600
2400
1200
9600
Baud Rate
% Error
Baud Rate%
Error
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
†
†
SCA1-SCA0 and T1M bit definitions can be found in
SCA1-SCA0 and T1M bit definitions can be found in
Divide
Factor
Divide
Factor
Oscillator
Oscillator
1152
4608
9216
1152
1536
3072
192
384
768
192
384
768
128
256
384
128
256
384
48
96
48
96
16
32
64
16
32
64
Rev. 1.1
Timer Clock
Source
SYSCLK / 12
SYSCLK / 12
SYSCLK / 12
SYSCLK / 48
Timer Clock
Source
SYSCLK / 12
SYSCLK / 12
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
X = Don’t care
X = Don’t care
SCA1-SCA0
(pre-scale select)
SCA1-SCA0
(pre-scale select)
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
00
00
00
10
00
00
11
11
11
11
11
11
11
11
11
11
11
11
†
†
Section
Section
T1M
T1M
1
1
0
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
1
1
0
0
0
0
1
0
0
0
†
†
19.1.
19.1.
Timer 1
Reload
Value (hex)
Timer 1
Reload
Value (hex)
0xD0
0xA0
0xD0
0xA0
0xFD
0xFA
0xD0
0xB8
0xC0
0xC0
0xFE
0xFC
0xE8
0xE0
0xF4
0xE8
0xF8
0xF0
0xE0
0xFF
0xF8
0xF0
0xE8
0x40
0x40
0x80
0x40
0x80