參數(shù)資料
型號: MB91121PFV
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 50 MHz, RISC MICROCONTROLLER, PQFP120
封裝: PLASTIC, LQFP-120
文件頁數(shù): 38/100頁
文件大?。?/td> 2316K
代理商: MB91121PFV
MB91121 Series
42
DS07-16303-4E
4.
U-TIMER (16-bit Timer for UART Baud Rate Generation)
The U-TIMER is a 16-bit timer for generating UART baud rate. Combination of chip operating frequency and
reload value of U-TIMER allows flexible setting of baud rate.
The U-TIMER operates as an interval timer by using interrupt issued on counter underflow.
The MB91121 series has 3 channel U-TIMER embedded on the chip. An interval of up to 216
× φ can be counted.
Block diagram
Register configuration
bit 15
bit 0
bit 15
bit 0
φ
f.f.
UTIMR (reload register)
UTIM ( U-TIMER register)
Clock
Underflow
To UART
(Peripheral clock)
Control
Load
Address
Initial value
bit 15
bit 0
00000078H
UTIM0/UTIMR0
000 000 0 0B
(R/W)
00000079H
000 000 0 0B
0000007CH
UTIM1/UTIMR1
000 000 0 0B
(R/W)
0000007DH
000 000 0 0B
00000080H
UTIM2/UTIMR2
000 000 0 0B
(R/W)
00000081H
000 000 0 0B
0000007BH
UTIMC0
0
000 0 1B
(R/W)
0000007FH
UTIMC1
0
000 0 1B
(R/W)
00000083H
UTIMC2
0
000 0 1B
(R/W)
(
) : Access
R/W : Readable and writable
: Unused
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