SAB80C517A-N18 Siemens Semiconductor Group, SAB80C517A-N18 Datasheet - Page 57

• Manufacturer Part Number: SAB80C517A-N18
• Description: 8-Bit CMOS Single-Chip Microcontroller
• Manufacturer: Siemens Semiconductor Group

Semiconductor Group
Serial Interface 1
Serial interface 1 can operate in two asynchronous modes:
Mode A:
Mode B:
Variable Baud Rates for Serial Interface 1.
Variable baud rates for modes A and B of serial interface 1 are derived from a dedicated baud
rate generator.
The baud rate clock (baud rate =
with programmable reload register.
Mode A, B baudrate =
11 bits are transmitted (through T
a start bit (0), 8 data bits (LSB first), a programmable 9th, and a stop bit (1).
On transmission, the 9th data bit (TB81 in S1CON) can be assigned to the
value of 0 or 1. For example, the parity bit (P in the PSW) could be moved
into TB81 or a second stop bit by setting TB81 to 1. On reception the 9th
data bit goes into RB81 in special function register S1CON, while the stop
bit is ignored.
10 bits are transmitted (through T
a start bit (0), 8 data bits (LSB first), and a stop bit (1). On reception, the
stop bit goes into RB81 in special function register S1CON.
9-bit UART, variable baud rate.
8-bit UART, variable baud rate.
32
*
(2
f
O SC
10
baud rate clock
- SREL)
16
56
D1) or received (through R
D1) or received (through R
) is generated by an 10-bit free running timer
SAB 80C517A/83C517A-5
D1):
D1):
1994-05-01