C8051F502-IMR Silicon Laboratories Inc, C8051F502-IMR Datasheet - Page 204
C8051F502-IMR
Manufacturer Part Number
C8051F502-IMR
Description
MCU 8-Bit C8051F50x 8051 CISC 64KB Flash 2.5V/3.3V/5V 32-Pin QFN EP T/R
Manufacturer
Silicon Laboratories Inc
Datasheet
1.C8051F502-IM.pdf
(312 pages)
Specifications of C8051F502-IMR
Package
32QFN EP
Device Core
8051
Family Name
C8051F50x
Maximum Speed
50 MHz
Ram Size
4.25 KB
Program Memory Size
64 KB
Operating Supply Voltage
2.5|3.3|5 V
Data Bus Width
8 Bit
Program Memory Type
Flash
Number Of Programmable I/os
25
Interface Type
I2C/SPI/UART
On-chip Adc
32-chx12-bit
Operating Temperature
-40 to 125 °C
Number Of Timers
4
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C8051F50x/F51x
Table 21.2 includes the configuration values required for the typical system clocks and baud rates:
21.2.4. Baud Rate Calculations—Automatic Mode
If the LIN controller is configured for slave mode, only the prescaler and divider need to be calculated:
The following example calculates the values of these variables for a 24 MHz system clock:
Table 21.3 presents some typical values of system clock and baud rate along with their factors.
204
SYSCLK
22.1184
11.0592
(MHz)
12.25
24.5
25
24
16
12
8
0
0
0
0
0
0
0
0
0
20 K
1
1
1
1
1
0
0
0
0
Table 21.2. Manual Baud Rate Parameters Examples
312
306
300
276
200
300
276
200
306
prescaler
0
0
0
0
0
0
0
0
0
divider
prescaler
divider
19.2 K
=
1
1
1
1
1
0
0
0
0
ln
=
=
325
319
312
288
208
319
312
288
208
24000000
------------------------- -
--------------------------------------------------------------------- -
2
4000000
=
---------------------------------------------
2
prescaler
ln
1
Rev. 1.2
24000000
+
SYSCLK
------------------------ -
Baud (bits/sec)
4000000
1
1
1
1
1
1
1
1
1
1
SYSCLK
9.6 K
20000
1
1
1
0
0
0
1
1
0
+
------- - 1
ln2
1
1
–
325
319
312
288
208
319
312
288
208
=
------- - 1
ln2
20000
1
=
300
1.585
–
3
3
3
3
3
3
3
3
3
4.8 K
1
1
1
1
1
0
0
0
0
1
325
319
312
288
208
319
312
288
208
19
19
19
19
19
19
19
19
19
1 K
1
1
1
1
1
0
0
0
0
312
306
300
276
200
306
300
276
200
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