参数资料
型号: EVAL-ADUC7036QSPZ
厂商: Analog Devices Inc
文件页数: 114/132页
文件大小: 0K
描述: BOARD EVAL FOR ADUC7036
设计资源: EVAL-ADUC7036 Schematic & Brd Outline
EVAL ADUC7036 Gerber Files
标准包装: 1
系列: QuickStart™ PLUS 套件
主要目的: 电源管理,电池监控器
嵌入式: 是,MCU,16/32 位
已用 IC / 零件: ADuC7036
已供物品: 板,线缆,文档,仿真器,电源,软件
ADuC7036
Rev. C | Page 82 of 132
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 from 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,
T4CAP, T4CLRI, and T4CON. T4LD, T4VAL, and T4CAP are
16-bit registers that hold 16-bit unsigned integers. T4VAL and
T4CAP are read only. 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 57.
Timer4 Load Register
Name: T4LD
Address: 0xFFFF0380
Default Value: 0x0000
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 32,768
STI
TIMER4 IRQ
16-BIT
UP/DOWN COUNTER
LOW POWER
32.768kHz OSCILLATOR
CORE
CLOCK FREQUENCY
16-BIT LOAD
TIMER4
VALUE
CAPTURE
IRQ[31:0]
07
47
4-
03
6
Figure 39. Timer4 Block Diagram
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