em78p510nso32j/s ELAN Microelectronics Corp, em78p510nso32j/s Datasheet - Page 78

• Manufacturer Part Number: em78p510nso32j/s
• Description: 8-bit Microprocessor With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

EM78P510N
8-Bit Microprocessor with OTP ROM
72 •
T
TXD pin
T
RXD pin
Sampling
Timing
SYSTEM
UTBE
URTIF
SYSTEM
TXD
pin
/16
/16
6.11.4 Baud Rate Generator
The baud rate generator is comprised of a circuit that generates a clock pulse to
determine the transfer speed for transmission/reception in the UART.
The BRATE2~BRATE0 bits of the URC register can determine the desired baud rate.
6.11.5 UART Timing
1. Transmission Counter Timing:
2. Receiving Counter Timing:
3. UART Transmit operation (8 bits data with parity bit):
Synchronization
(Reset counter)
12
Stop bit
1
13
START
bit
2
Start bit
1
3
D0
2
Start bit
4
3
D1
5
4
6
D2
5
7
One bit cycle
6
8
One bit cycle
7
9
8
10
(This specification is subject to change without further notice)
9
11
Dn
10
12
Parity
11
bit
13
Product Specification (V1.1) 01.25.2008
STOP
12
14
bit
13
15
14
16
START
bit
Clear by
software
write data into UARTTx .
Clear by hardware when
15
1
And start transmitting.
Bit 0
2
D0
16
3
Bit 0
1
D1
4
2
D2
3
4