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參數(shù)資料
| 型號： | 8XC51SL.LOWVOLTAGE8XC51SL |
| 廠商： | Intel Corp. |
| 英文描述： | KEYBOARD CONTROLLER |
| 中文描述： | 鍵盤控制器 |
| 文件頁數(shù)： | 18/58頁 |
| 文件大?。?/td> | 233K |
| 代理商： | 8XC51SL.LOWVOLTAGE8XC51SL |
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2003 Oct 30
18
Philips Semiconductors
Product specification
Low power single card reader
TDA8029
8.2.5
T
IMER
/
COUNTER
2
SET
-
UP
Except for the baud rate generator mode, the values given for T2CON do not include the setting of the TR2 bit. Therefore,
bit TR2 must be set, separately, to turn the timer on.
Table 10
Timer 2 as a timer
Notes
1.
2.
Capture/reload occurs only on timer/counter overflow.
Capture/reload on timer/counter overflow and a HIGH to LOW transition on T2EX, except when timer 2 is used in the
baud rate generator mode.
Table 11
Timer 2 as a counter
Notes
1.
2.
Capture/reload occurs only on timer/counter overflow.
Capture/reload on timer/counter overflow and a HIGH to LOW transition on T2EX (P1.1) pin except when timer 2 is
used in the baud rate generator mode.
8.3
Enhanced UART
The UART operates in all of the usual modes that are described in the first section of “Data Handbook IC20,
80C51-based 8-bit microcontrollers” In addition the UART can perform framing error detection by looking for missing
stop bits and automatic address recognition. The UART also fully supports multiprocessor communication as does the
standard 80C51 UART.
When used for framing error detection the UART looks for missing stop bits in the communication. A missing bit will set
the bit FE or bit 7 in the SCON register. Bit FE is shared with bit SM0. The function of SCON bit 7 is determined by bit 6
in register PCON (bit SMOD0). If SMOD0 is set then bit 7 of register SCON functions as FE and as SM0 when SMOD0
is cleared. When used as FE this bit can only be cleared by software.
8.3.1
S
ERIAL PORT
C
ONTROL REGISTER
(SCON)
Table 12
Serial port control register bits
MODE
T2CON
INTERNAL CONTROL
(1)
(HEX)
EXTERNAL CONTROL
(2)
(HEX)
16-bit auto-reload
Baud rate generator receive and
transmit same baud rate
Receive only
Transmit only
00
34
08
36
24
14
26
16
MODE
T2CON
INTERNAL CONTROL
(1)
(HEX)
EXTERNAL CONTROL
(2)
(HEX)
16-bit
Auto-reload
02
03
04
0B
BIT
7
6
5
4
3
2
1
0
Symbol
SM0/FE
SM1
SM2
REN
TB8
RB8
TI
RI
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 8XC51SLLOWVOLTAGE8XC51SL | KEYBOARD CONTROLLER |
| 8XC52 | 80C51 8-Bit Microcontroller Family (8K ROM,Low Voltage (2.7V-5.5V), Low Power, High Speed (33 MHz) )(80C51 8位微控制器系列產(chǎn)品) |
| 8XC54 | 80C51 8-bit microcontroller family 8K-64K/256-1K OTP/ROM/ROMless, low voltage 2.7V-5.5V), low power, high speed (33 MHz) |
| 8XC58 | 80C51 8-bit microcontroller family 8XC51FA/FB/FC/80C51FA8XC51RA+/RB+/RC+/RD+/80C51RA +8K 4K/256K OTP/ROM/ROMless,low voltage, low power, high speed (33 MHz)(80C51 8位微控制器系列產(chǎn)品) |
| 8XC562 | 80C51 FAMILY DERIVATIVES |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 8XC52 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER |
| 8XC54 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER |
| 8XC54/58 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:(360.35 k) |
| 8XC552 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 FAMILY DERIVATIVES |
| 8XC562 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 FAMILY DERIVATIVES |
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