at89c51re2-slsem ATMEL Corporation, at89c51re2-slsem Datasheet - Page 104

• Manufacturer Part Number: at89c51re2-slsem
• Description: At89c51re2 8-bit Flash Microcontroller
• Manufacturer: ATMEL Corporation

UART Registers
7663B–8051–03/07
Table 64. Example of Computed Value When X2=1, SMOD1=1, SPD=1
Table 65. Example of Computed Value When X2=0, SMOD1=0, SPD=0
The baud rate generator can be used for mode 1 or 3 (refer to Figure 24.), but also for
mode 0 for UART, thanks to the bit SRC located in BDRCON register (Table 72.)
Table 66. SBUF_0 register
SBUF_0 - Serial Buffer Register for UART 0(99h)
Reset Value = XXXX XXXXb
Table 67. BRL_0 register
BRL_0 - Baud Rate Reload Register for the internal baud rate generator 0 (9Ah)
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
F
F
5
5
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
Error (%)
Error (%)
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
3.55
0.16
-
0
0
87