SM59A16U1
8-Bit Micro-controller
64KB with ISP Flash
& 6K+256B RAM embedded
9.7.3 Mode 2
This mode is similar to Mode 1, with two differences. The baud rate is fixed at 1/32 (SMOD=1) or 1/64(SMOD=0) of
oscillator frequency and 11 bits are transmitted or received: a start bit (0), 8 data bits (LSB first), a programmable 9th
bit, and a stop bit (1). The 9th bit can be used to control the parity of the serial interface: at transmission, bit TB80 in
S0CON is output as the 9th bit, and at receive, the 9th bit affects RB80 in Special Function Register S0CON.
9.7.4 Mode 3
The only difference between Mode 2 and Mode 3 is that in Mode 3 either internal baud rate generator or timer 1 can be
use to specify baud rate. As shown in Fig. 9-5 and Fig. 9-6.
Fig. 9-5: Transmit modes 2 and 3 for Serial 0
Fig. 9-6: Receive modes 2 and 3 for Serial 0
9.8
Serial Interface 1
The interrupt vector is 83h.
The Serial Interface 1 can operate in the following 2 modes:
SM
0
1
Mode
A
B
Description
9-bit UART
8-bit UART
Baud Rate
Variable
Variable
9.8.1 Mode A
This mode is similar to Mode 2 and 3 of Serial interface 0, 11 bits are transmitted or received: a start bit (0), 8 data bits
(LSB first), a programmable Bit 9, and a stop bit (1). Bit 9 can be used to control the parity of the serial interface: at
transmission, bit TB81 in S1CON is outputted as Bit 9, and at receive, Bit 9 affects RB81 in SFR S1CON. As shown in
Fig. 9-7 and Fig. 9-8.
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M071
Ver A SM59A16U1 04/12/2013
- 67 -
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
