AT83C5135 Atmel Corporation, AT83C5135 Datasheet - Page 55

• Manufacturer Part Number: AT83C5135
• Manufacturer: Atmel Corporation

Specifications of AT83C5135

• Max. Operating Frequency: 32 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Eeprom (bytes): 512
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 4
• Mask Rom (kbytes): 16
• Watchdog: Yes

14.4
7683C–USB–11/07
UART Registers
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 14-4.), but also for mode 0
for UART, thanks to the bit SRC located in BDRCON register (Table 14-4.)
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
Baud Rates
7
–
7
–
7
–
115200
57600
38400
28800
19200
9600
4800
4800
2400
1200
600
6
–
6
–
6
–
BRL
BRL
247
238
229
220
203
149
247
238
220
185
43
5
–
5
–
5
–
F
F
OSC
OSC
= 16.384 MHz
= 16.384 MHz
4
–
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
–
3
–
AT83C5134/35/36
BRL
BRL
2
–
2
–
2
–
243
230
217
204
178
100
243
230
202
152
-
F
F
OSC
OSC
= 24 MHz
= 24 MHz
1
–
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
–
0
–
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