參數(shù)資料
型號(hào)： VRS550-QAI25
廠商： Electronic Theatre Controls, Inc.
英文描述： VRS550 - 8kB Flash, 256B RAM, 25MHz, 8-Bit MCU VRS560 - 16kB Flash, 256B RAM, 25MHz, 8-Bit MCU
中文描述： VRS550 - 8KB閃存，256B的RAM，25MHz的，8位微控制器VRS560 - 16kB的閃存，256B的RAM，25MHz的，8位微控制器
文件頁(yè)數(shù)： 13/40頁(yè)
文件大小： 868K
代理商： VRS550-QAI25
VRS550 / VRS560
VERSA
Datasheet Rev 1.1
1134 Ste Catherine Street West, Suite 900, Montreal, Quebec, Canada H3B 1H4
Tel: (514) 871-2447
http://www.goalsemi.com
13
Timers
Both the VRS550 and VRS560 include three 16-bit
timers: T0, T1 and T2.
The timers can operate in two specific modes:
Event counting mode
Timer mode
When operating in counting mode, the counter is
incremented each time an external event, such as a
transition in the logical state of the timer input (T0, T1,
T2 input), is detected. When operating in timer mode,
the counter is incremented by the microcontroller’s
direct clock pulse or by a divided version of this pulse.
Timer 0 and Timer 1
Timers 0 and 1 have four modes of operation. These
modes allow the user to change the size of the
counting register or to authorize an automatic reload
when provided with a specific value. Timer 1 can even
be used as a baud rate generator to generate
communication frequencies for the serial interface.
Timer 1 and Timer 0 are configured by the TMOD and
TCON registers.
T
ABLE
11:
T
IMER
M
ODE
C
ONTROL
R
EGISTER
(TMOD) – SFR 89
H
7
6
5
GATE
C/T
M1
Bit
Mnemonic
Description
7
GATE1
1: Enables external gate control (pin INT1 for
Counter 1). When INT1 is high, and TRx bit is
set (see TCON register), a counter is
incremented every falling edge on the T1IN
input pin.
6
C/T1
Selects timer or counter operation (Timer 1).
1 = A counter operation is performed
0 = The corresponding register will function
as a timer.
5
M1.1
Selects mode for Timer/Counter 1
4
M0.1
Selects mode for Timer/Counter 1
3
GATE0
If set, enables external gate control (pin INT0
for Counter 0). When INT0 is high, and TRx
bit is set (see TCON register), a counter is
incremented every falling edge on the T0IN
input pin.
2
C/T0
Selects timer or counter operation (Timer 0).
1 = A counter operation is performed
0 = The corresponding register will function
as a timer.
1
M1.0
Selects mode for Timer/Counter 0.
0
M0.0
Selects mode for Timer/Counter 0.
The table below summarizes the four modes of
operation of timers 0 and 1. The timer-operating mode
is selected by the bits M1 and M0 of the TMOD
register.
4
M0
3
2
1
0
GATE
C/T
M1.0
M0.0
T
ABLE
12:
T
IMER
/C
OUNTER
M
ODE
D
ESCRIPTION
S
UMMARY
M1 M0 Mode
0
0
Mode 0
0
1
Mode 1
1
0
Mode 2
Function
13-bit Counter
16-bit Counter
8-bit auto-reload Counter/Timer. The reload
value is kept in TH0 or TH1, while TL0 or TL1
is incremented every machine cycle. When TLx
overflows, the value of THx is copied to TLx.
If Timer 1 M1 and M0 bits are set to 1, Timer 1
stops.
1
1
Mode 3
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
VRS550-QLC25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:VRS550 - 8kB Flash, 256B RAM, 25MHz, 8-Bit MCU VRS560 - 16kB Flash, 256B RAM, 25MHz, 8-Bit MCU
VRS550-QLI25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:VRS550 - 8kB Flash, 256B RAM, 25MHz, 8-Bit MCU VRS560 - 16kB Flash, 256B RAM, 25MHz, 8-Bit MCU
VRS560 制造商:未知廠家 制造商全稱:未知廠家 功能描述:VRS550 - 8kB Flash, 256B RAM, 25MHz, 8-Bit MCU VRS560 - 16kB Flash, 256B RAM, 25MHz, 8-Bit MCU
VRS560-PAC25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:VRS550 - 8kB Flash, 256B RAM, 25MHz, 8-Bit MCU VRS560 - 16kB Flash, 256B RAM, 25MHz, 8-Bit MCU
VRS560-PAI25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:VRS550 - 8kB Flash, 256B RAM, 25MHz, 8-Bit MCU VRS560 - 16kB Flash, 256B RAM, 25MHz, 8-Bit MCU
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