參數(shù)資料
型號: P87C51RA2BBD
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; No. of Contacts:18; Connector Shell Size:14; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Gender:Female
中文描述: 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, SOT-389-1, LQFP-44
文件頁數(shù): 16/34頁
文件大?。?/td> 394K
代理商: P87C51RA2BBD
2001 Apr 06
16
Philips Semiconductors
Preliminary specification
P87C51MB2/P87C51MC2
80C51 8-bit microcontroller family with extended memory
64KB/96KB OTP with 2KB/3KB RAM
Baud Rate Selection
UART 0 and UART 1 selects the baud rate differently as shown in Tables 4 and 5:
S0CON.7
(SM0_0)
S0CON.6
(SM1_0)
T2CON.5/4
(RCLK - Receive
TCLK - Transmit)
PCON.7
(SMOD1)
BRGCON.1
(S0BRGS)
Receive/Transmit Baud Rate for UART 0
0
0
X
X
X
f
OSC
/6
T1_rate/32
*
0
1
0
0
X
0
1
X
T1_rate/16
*
1
X
0
T2_rate/16
*
f
OSC
/(BRATE
×
16+16)
*
1
X
1
1
0
X
0
X
f
OSC
/32
X
1
X
f
OSC
/16
T1_rate/32
*
1
1
0
0
X
0
1
X
T1_rate/16
*
1
X
0
T2_rate/16
*
f
OSC
/(BRATE
×
16+16)
*
1
X
1
*
UART 0 can have different receive and transmit baud rates.
Table 4: Baud Rate Generation for UART 0. Use T2CON.5 (RCLK) in Receive Baud Rate Selection, T2CON.4 (TCLK) in
Transmit Baud Rate Selection
S1CON.7
(SM0_1)
S1CON.6
(SM1_1)
Baud Rate for UART 1
0
0
f
OSC
/6
0
1
f
OSC
/(BRATE
×
16+16)
*
f
OSC
/(BRATE
×
16+16)
*
f
OSC
/(BRATE
×
16+16)
*
1
0
1
1
*
UART 1 has the same receive and transmit baud rate.
Table 5: Baud Rate Generation for UART 1.
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