參數(shù)資料
型號: ADUC7034BCPZ
廠商: Analog Devices Inc
文件頁數(shù): 118/136頁
文件大小: 0K
描述: IC MCU FLASH 32K ANLG IO 48LFCSP
標(biāo)準(zhǔn)包裝: 1
系列: MicroConverter® ADuC7xxx
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 20.48MHz
連通性: LIN,SPI,UART/USART
外圍設(shè)備: POR,PSM,溫度傳感器,WDT
輸入/輸出數(shù): 9
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
RAM 容量: 1K x 32
電壓 - 電源 (Vcc/Vdd): 3.5 V ~ 18 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 2x16b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 115°C
封裝/外殼: 48-VFQFN 裸露焊盤,CSP
包裝: 托盤
ADuC7034
Rev. B | Page 82 of 136
TIMER4—STI TIMER
Timer4 is a general-purpose, 16-bit up/down counter timer
with a programmable prescaler. Timer4 can be clocked from the
core clock or the low power 32.768 kHz oscillator with a
prescaler of 1, 16, 256, or 32,768.
Timer4 has a capture register (T4CAP) that can be triggered by
the initial assertion of a selected IRQ source. After the capture
register is triggered, the current timer value is copied to T4CAP,
and the timer continues running. This feature can be used to
determine the assertion of an event with increased accuracy.
Timer4 can also be used to drive the serial test interface (STI)
peripheral.
The Timer4 interface consists of five MMRs:
T4LD, T4VAL, and T4CAP are 16-bit registers and hold 16-bit
unsigned integers. T4VAL and T4CAP are read only registers.
T4CLRI is an 8-bit register. Writing any value to this register
clears the interrupt.
T4CON is a configuration MMR and is described in Table 56.
Timer4 Load Register
Name:
T4LD
Address:
0xFFFF0380
Default Value:
0x00000
Access:
Read/write
Function:
This 16-bit register holds the 16-bit value that
is loaded into the counter.
Timer4 Clear Register
Name:
T4CLRI
Address:
0xFFFF038C
Access:
Write only
Function:
This 8-bit, write only MMR is written (with
any value) by user code to clear the interrupt.
Timer4 Value Register
Name:
T4VAL
Address:
0xFFFF0384
Default Value:
0xFFFF
Access:
Read only
Function:
This 16-bit register holds the current value of
Timer4.
Time4 Capture Register
Name:
T4CAP
Address:
0xFFFF0390
Default Value:
0x0000
Access:
Read only
Function:
This 16-bit register holds the 32-bit value
captured by an enabled IRQ event.
Timer4 Control Register
Name:
T4CON
Address:
0xFFFF0388
Default Value:
0x00000000
Access:
Read/write
Function:
This 32-bit MMR configures the mode of
operation of Timer4.
PRESCALER
1, 16, 256, OR 32768
STI
TIMER4 IRQ
16-BIT LOAD
LOW POWER
32.768kHz OSCILLATOR
16-BIT
UP/DOWN COUNTER
CORE
CLOCK FREQUENCY
TIMER4
VALUE
CAPTURE
IRQ[31:0]
071
16-
0
34
Figure 38. Timer4 Block Diagram
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