SAB80C515A-M18-T3 Siemens Semiconductor Group, SAB80C515A-M18-T3 Datasheet - Page 39

• Manufacturer Part Number: SAB80C515A-M18-T3
• Description: 8-Bit CMOS Single-Chip Microcontroller
• Manufacturer: Siemens Semiconductor Group

Serial Interface
The SAB 80C515A has a full duplex and receive buffered serial interface. It is functionally
identical with the serial interface of the SAB 8051.
Table 6 shows possible configurations and the according baud rates.
Table 6
Baud Rate Generation
8-Bit
syn-
chron-
ous
channel
8-Bit
UART
9-Bit
UART
Semiconductor Group
Baud-
rate
derived from
Baud-
rate
derived from
Baud-
rate
derived from
Mode
Mode
Mode
f
f
f
f
f
f
f
f
f
O SC
OSC
OSC
OSC =
OSC
OSC
OSC
O SC
O SC
=16 MHz
=16 MHz
=12 MHz
=16 MHz
=18 MHz
=18 MHz
=12 MHz
=18 MHz
12 MHz
1 MHz
1.33 MHz
1.5 MHz
f
1 Baud – 62.5 kBaud
1 Baud – 83 kBaud
1 Baud – 93.7 kBaud
Timer 1
187.5 kBaud/
375 kBaud
250 Baud/
500 kBaud
281.2 kBaud/
562.5 kBaud
f
OSC/
OSC
Mode 2
2
38
1 Baud –
62.5 kBaud
1 Baud –
83.3 kBaud
1 Baud –
93.7 kBaud
Timer 1
SAB 80C515A/83C515A-5
Mode 0
Mode 1
183 Baud – 375 kBaud
244 Baud – 500 kBaud
2375 Baud – 562.5 kBaud
10-Bit Baudrate
183 Baud –75 kBaud
244 Baud – 500 kBaud
275 Baud – 562.5 kBaud
10-Bit
Baudrate
Generator
Generator
Mode 3