參數(shù)資料
型號: ADUuC7027BSTZ62-RL
廠商: Analog Devices, Inc.
英文描述: Precision Analog Microcontroller 12-bit Analog I/O, ARM7TDMI MCU
中文描述: 精密模擬微控制器的12位模擬I / O,ARM7TDMI的微控制器
文件頁數(shù): 77/92頁
文件大?。?/td> 850K
代理商: ADUUC7027BSTZ62-RL
ADuC7019/20/21/22/24/25/26/27
Table 75. T1CON MMR Bit Descriptions
Bit
Value
Description
31:18
Reserved.
17
Event Select Bit.
Set
by user to enable time
capture of an event.
Cleared
by user to
disable time capture of an event
16:12
Event Select Range, 0 to 31. These events are
as described in Table 72. All events are offset
by two, that is, event 2 in Table 72 becomes
event zero for the purposes of Timer1.
11:9
Clock Select.
000
Core Clock (HCLK).
001
External 32.768 kHz Crystal.
010
P1.0 Raising Edge Triggered.
011
P0.6 Raising Edge Triggered.
8
Count Up.
Set
by user for Timer1 to count up.
Cleared
by user for Timer1 to count down by
default.
7
Timer1 enable bit.
Set
by user to enable
Timer1.
Cleared
by user to disable Timer1 by
default.
6
Timer1 Mode.
Set
by user to operate in
periodic mode.
Cleared
by user to operate in
free-running mode. Default mode.
5:4
Format.
00
Binary.
01
Reserved.
10
Hr:Min:Sec:Hundredths (23 hours to 0 hour).
11
Hr:Min:Sec:Hundredths (255 hours to 0 hour).
3:0
Prescale:
0000
Source Clock/1.
0100
Source Clock/16.
1000
Source Clock/256.
1111
Source Clock/32768.
T1CLRI Register
Name
Address
T1CLRI
0xFFFF032C
Rev. A | Page 77 of 92
Default Value
0xFF
Access
W
T1CLRI is an 8-bit register. Writing any value to this register
clears the Timer1 interrupt.
T1CAP Register
Name
T1CAP
Address
0xFFFF0330
Default Value
0x00000000
Access
R
T1CAP is a 32-bit register. It holds the value contained in
T1VAL when a particular event occurred. This event must be
selected in T1CON.
Timer2 (Wake-Up Timer)
Timer2 is a 32-bit wake-up timer (count-down or count-up)
with a programmable prescaler. The source can be the 32 kHz
external crystal, the core clock frequency, or the internal 32 kHz
oscillator. The clock source can be scaled by a factor of 1, 16,
256, or 32,768. The wake-up timer continues to run when the
core clock is disabled.
The counter can be formatted as plain 32-bit value or as
Hours: Minutes: Seconds: Hundredths.
Timer2 can be used to start ADC conversions as shown in the
block diagram Figure 65.
0
INTERNAL
OSCILLATOR
EXTERNAL
CRYSTAL
HCLK
PRESCALER
/1, 16, 256
OR 32768
32-BIT
UP/DOWN
COUNTER
32-BIT
LOAD
TIMER2
VALUE
TIMER2 IRQ
Figure 65. Timer2 Block Diagram
Timer2 interface consists in four MMRS: T2LD, T2VAL,
T2CON, and T2CLRI.
T2LD Register
Name
T2LD
Address
0xFFFF0340
Default Value
0x00000000
Access
R/W
T2LD is a 16-bit register load register.
T2VAL Register
Name
T2VAL
Address
0xFFFF0344
Default Value
0xFFFFFFFF
Access
R
T2VAL is a 16-bit read-only register that represents the current
state of the counter.
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