W7100A-64QFN WIZnet, W7100A-64QFN Datasheet - Page 109

• Manufacturer Part Number: W7100A-64QFN
• Description: 8-bit Microcontrollers - MCU 8051 CORE+HARDWIRED TCP/IP+MAC+PHY
• Manufacturer: WIZnet

Specifications of W7100A-64QFN

• Rohs: yes
• Interface Type: UART

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2) Interrupt state should be set when initializing the serial communication.
3) The baud rate should be set to the value which the user will use. Baud rate value for the
② PCON(87H): Decide the SMOD bit which is the control flag of the serial transmission
rate.
③ SCON(98H): For control and observe the UART.
Since the serial communication uses interrupt, user must disable the related interrupts
when initializing the serial communication.
SM
REN: Receive enable bit (‘1’; Receive enable).
TB
RB
TI: Transmission complete interrupt flag.
RI: Reception complete interrupt flag.
Mode
SMOD
1, 3
2
8
8
SM
: Used in Mode2, 3. Assume that this bit set to 1, if the 9th bit of received data
: In the mode2, 3, 8th bit of transmitted data.
: In the mode2, 3, 8th bit of received data.
2
bit is ‘1’, receive the data. Or the bit is ‘0’ ignore the data.
0
SM
M
0
0
1
1
0
0
1
1
SM
1
0
-
A half of Overflow of the
1
A quarter of the XTAL
Timer/Counter 1
SMOD = ‘0’
SM
Table 9.1 Timer / Counter Mode
-
2
Table 9.2 Baud rate
Table 9.3 Mode of UART
REN
-
SM
M
0
1
0
1
0
1
0
1
0
1
TB
-
8
-
RB
A half of the XTAL
Timer/Counter 1
Overflow of the
8
SMOD = ‘1’
Mode
Mode
-
TI
0
1
2
3
0
1
2
3
Ver. 1.12
-
RI
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