AT89C5131A-RDTIL datasheet(72/185 Pages) ATMEL

72 / 185 page

AT89C5131A-L

4338E–USB–06/06

Example of computed value when X2 = 1, SMOD1 = 1, SPD = 1

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 36.), but also for

mode 0 for UART, thanks to the bit SRC located in BDRCON register (Table 59.)

UART Registers

SADEN - Slave Address Mask Register for UART (B9h)

Reset Value = 0000 0000b

SADDR - Slave Address Register for UART (A9h)

Reset Value = 0000 0000b

SBUF - Serial Buffer Register for UART (99h)

Reset Value = XXXX XXXXb

Baud Rates

FOSC = 16.384 MHz

FOSC = 24 MHz

BRL

Error (%)

BRL

Error (%)

115200

247

1.23

243

0.16

57600

238

1.23

230

0.16

38400

229

1.23

217

0.16

28800

220

1.23

204

0.16

19200

203

0.63

178

0.16

9600

149

0.31

100

0.16

4800

1.23

Baud Rates

FOSC = 16.384 MHz

FOSC = 24 MHz

BRL

Error (%)

BRL

Error (%)

4800

247

1.23

243

0.16

2400

238

1.23

230

0.16

1200

220

1.23

202

3.55

600

185

0.16

152

0.16

–

AT89C5131A-RDTIL 데이터시트(PDF) 72 Page - ATMEL Corporation

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