Page 220
16. Asynchronous Serial Interface (UART)
16.8 Transfer Baud Rate
TMP89FM42
RA001
Figure 16-6 Example of UART0DR Calculation
000
4000000 [Hz]
4000000 [Hz]
4000000 [Hz]
4000000 [Hz]
4000000 [Hz]
1
6
35714 [baud] (
6.99%)
40404 [baud] (
5.22%)
38095 [baud] (
0.79%)
36866 [baud] (
3.99%)
39216 [baud] (
2.12%)
1
6
1
6
1
5
1
5
UARTDR =
16
38400 [baud]
UARTDR calculation
Generated baud rate
RTSEL
4000000 [Hz]
16
(6 + 1)
4000000 [Hz]
16.5
(5 + 1)
4000000 [Hz]
15
(6 + 1)
4000000 [Hz]
15.5
(6 + 1)
4000000 [Hz]
17
(5 + 1)
001
UARTDR =
16.5
38400 [baud]
010
UARTDR =
15
38400 [baud]
011
UARTDR =
15.5
38400 [baud]
100
UARTDR =
17
38400 [baud]
≈
≈
≈
≈
≈
Summary of Contents for TLCS-870/C1 Series
Page 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Page 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Page 4: ......
Page 14: ......
Page 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Page 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Page 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Page 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Page 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Page 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Page 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Page 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Page 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Page 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Page 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Page 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Page 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Page 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Page 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Page 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Page 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Page 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Page 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Page 406: ...26 Package Dimensions TMP89FM42 ...
Page 408: ......