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參數資料
| 型號： | W77IE58 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁數： | 72/90頁 |
| 文件大小： | 409K |
| 代理商： | W77IE58 |
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Preliminary W77IE58
- 72 -
shifting in 9 data bits, there is one more shift to do, after which the SBUF and RB8 are loaded and RI is
set. However certain conditions must be met before the loading and setting of RI can be done.
1. RI must be 0 and
2. Either SM2 = 0, or the received stop bit = 1.
If these conditions are met, then the stop bit goes to RB8, the 8 data bits go into SBUF and RI is set.
Otherwise the received frame may be lost. After the middle of the stop bit, the receiver goes back to
looking for a 1-to-0 transition on the RxD pin.
MODE 3
This mode is similar to Mode 2 in all respects, except that the baud rate is programmable. The user
must first initialize the Serial related SFR SCON before any communication can take place. This involves
selection of the Mode and baud rate. The Timer 1 should also be initialized if modes 1 and 3 are used. In
all four modes, transmission is started by any instruction that uses SBUF as a destination register.
Reception is initiated in Mode 0 by the condition RI = 0 and REN = 1. This will generate a clock on the
TxD pin and shift in 8 bits on the RxD pin. Reception is initiated in the other modes by the incoming start
bit if REN = 1. The external device will start the communication by transmitting the start bit.
SBUF
RB8
Transmit Shift Register
Receive Shift
Register
TX SHIFT
PAROUT
D8
Internal
Data Bus
Internal
Data
Bus
TXD
RXD
Serial Port
Interrupt
SMOD=
(SMOD_1)
TCLK
RCLK
SAMPLE
Write to
SBUF
TX START
SOUT
0
1
0
1
TI
1
0
PARIN
STOP
D8
START
LOAD
CLOCK
Read
SBUF
Timer 2 Overflow
(for Serial Port 0 only)
Timer 1
Overflow
TX CLOCK
RI
SERIAL
CONTROLLER
RX CLOCK
LOAD
SBUF
RX SHIFT
RX
START
2
16
1-TO-0
DETECTOR
BIT
DETECTOR
16
CLOCK
SIN
TB8
Figure 23. Serial Port Mode 3
Table 10. Serial Ports Modes
SM1
SM0
Mode
Type
Baud Clock
Frame
size
8 bits
10 bits
11 bits
11 bits
Start
bit
No
1
1
1
Stop
bit
No
1
1
1
9th bit
function
None
None
0, 1
0, 1
0
0
1
1
0
1
0
1
0
1
2
3
Synch.
Asynch.
Asynch.
Asynch.
4 or 12 T
CLKS
Timer 1 or 2
32 or 64
T
CLKS
Timer 1 or 2
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| W77L32 | 8-BIT MICROCONTROLLER |
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| W77LE58 | 8 BIT MICROCONTROLLER |
| W77LE58-25 | 8 BIT MICROCONTROLLER |
| W77LE58F-25 | 8 BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W77IE58_06 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77J_1G WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| W77J_2GST WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| W77J_3G WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| W77L032A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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