參數(shù)資料
型號(hào): SAB80C517A-N18
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 8-Bit CMOS Single-Chip Microcontroller
中文描述: 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84
文件頁(yè)數(shù): 57/77頁(yè)
文件大小: 1358K
代理商: SAB80C517A-N18
SAB 80C517A/83C517A-5
Semiconductor Group
56
1994-05-01
Serial Interface 1
Serial interface 1 can operate in two asynchronous modes:
Mode A:
9-bit UART, variable baud rate.
11 bits are transmitted (through T
×
D1) or received (through R
×
D1):
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.
8-bit UART, variable baud rate.
10 bits are transmitted (through T
×
D1) or received (through R
×
D1):
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.
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.
baud rate clock
16
The baud rate clock (baud rate =
with programmable reload register.
Mode A, B baudrate =
) is generated by an 10-bit free running timer
f
OSC
32
*
(2
10
- SREL)
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