AT89C51RB2-RLTCM ATMEL [ATMEL Corporation], AT89C51RB2-RLTCM Datasheet - Page 48

• Manufacturer Part Number: AT89C51RB2-RLTCM
• Description: 8-bit Microcontroller with 16K/ 32K Bytes Flash
• Manufacturer: ATMEL [ATMEL Corporation]

UART Registers
48
AT89C51RB2/RC2
Table 34. Example of Computed Value When X2 = 1, SMOD1 = 1, SPD = 1
Table 35. Example of Computed Value When X2 = 0, SMOD1 = 0, SPD = 0
The baud rate generator can be used for mode 1 or 3 (see Figure 19), but also for mode
0 for UART, thanks to the bit SRC located in BDRCON register (Table 42).
Table 36. SADEN Register
SADEN - Slave Address Mask Register for UART (B9h)
Reset Value = 0000 0000b
Table 37. SADDR Register
SADDR - Slave Address Register for UART (A9h)
Reset Value = 0000 0000b
Baud Rates
Baud Rates
7
7
115200
57600
38400
28800
19200
9600
4800
4800
2400
1200
600
6
6
BRL
BRL
247
238
229
220
203
149
247
238
220
185
43
5
5
F
F
OSC
OSC
= 16. 384 MHz
= 16. 384 MHz
4
4
Error (%)
Error (%)
1.23
1.23
1.23
1.23
0.63
0.31
1.23
1.23
1.23
1.23
0.16
3
3
BRL
BRL
2
2
243
230
217
204
178
100
243
230
202
152
-
F
F
OSC
OSC
= 24MHz
= 24MHz
1
1
4180B–8051–04/03
Error (%)
Error (%)
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
3.55
0.16
-
0
0