C8051F321 Silicon Laboratories Inc, C8051F321 Datasheet - Page 201
C8051F321
Manufacturer Part Number
C8051F321
Description
IC 8051 MCU 16K FLASH 28MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F32xr
Datasheet
1.C8051F320R.pdf
(256 pages)
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
-
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Table 17.3. Timer Settings for Standard Baud Rates Using an External Oscillator
Table 17.4. Timer Settings for Standard Baud Rates Using an External Oscillator
Frequency: 22.1184 MHz
Target
Baud Rate
(bps)
Frequency: 18.432 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
18432
15360
1536
2304
9216
1536
2304
1280
1920
7680
1280
1920
192
384
768
192
384
768
160
320
640
160
320
640
96
96
80
80
Timer Clock
Source
SYSCLK / 12
SYSCLK / 12
SYSCLK / 12
SYSCLK / 48
SYSCLK / 48
Timer Clock
Source
SYSCLK / 12
SYSCLK / 48
SYSCLK / 48
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 / 4
SYSCLK / 4
SYSCLK
SYSCLK
Rev. 1.1
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
00
00
00
10
10
01
01
00
10
10
11
11
11
11
11
11
11
11
11
11
11
11
C8051F320/1
†
†
Section
Section
T1M
T1M
1
1
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
†
†
19.1.
19.1.
Timer 1
Reload
Value (hex)
Timer 1
Reload
Value (hex)
0xEC
0xD0
0xA0
0xC0
0xA0
0xA0
0xFA
0xD0
0xA0
0xD8
0xB0
0xB0
0xB0
0xB0
0xFB
0xD8
0xB0
0xE0
0xF4
0xE8
0xF6
0x40
0x40
0x70
0x60
0x60
0x60
0x88
201
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