參數(shù)資料
型號： AT90S2313-10PC
廠商： Atmel
文件頁數(shù)： 73/92頁
文件大小： 0K
描述： IC MCU 2K FLSH 10MHZ UART 20DIP
標(biāo)準(zhǔn)包裝： 18
系列： AVR® 90S
核心處理器： AVR
芯體尺寸： 8-位
速度： 10MHz
連通性： SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 15
程序存儲器容量： 2KB（1K x 16）
程序存儲器類型： 閃存
EEPROM 大小： 128 x 8
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 6 V
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 20-DIP（0.300"，7.62mm）
包裝： 管件
1997 Microchip Technology Inc.
DS30234D-page 75
PIC16C6X
9.0
TIMER2 MODULE
Timer2 is an 8-bit timer with a prescaler and a
postscaler. It is especially suitable as PWM time-base
for PWM mode of CCP module(s). TMR2 is a readable
and writable register, and is cleared on any device
reset.
The input clock (FOSC/4) has a prescale option of 1:1,
1:4
or
1:16,
selected
by
control
bits
T2CKPS1:T2CKPS0 (T2CON<1:0>).
The Timer2 module has an 8-bit period register, PR2.
Timer2 increments from 00h until it matches PR2 and
then resets to 00h on the next increment cycle. PR2 is
a readable and writable register. The PR2 register is ini-
tialized to FFh upon reset.
The match output of the TMR2 register goes through a
4-bit postscaler (which gives a 1:1 to 1:16 scaling,
inclusive) to generate a TMR2 interrupt (latched in ag
bit TMR2IF (PIR1<1>)).
The Timer2 module can be shut off by clearing control
bit TMR2ON (T2CON<2>) to minimize power con-
sumption.
Figure 9-2 shows the Timer2 control register. T2CON is
cleared upon reset which initializes Timer2 as shut off
with the prescaler and postscaler at a 1:1 value.
Applicable Devices
61 62 62A R62 63 R63 64 64A R64 65 65A R65 66 67
9.1
Timer2 Prescaler and Postscaler
The prescaler and postscaler counters are cleared
when any of the following occurs:
a write to the TMR2 register
a write to the T2CON register
any device reset (POR, BOR, MCLR Reset, or
WDT Reset).
TMR2 is not cleared when T2CON is written.
9.2
Output of TMR2
The output of TMR2 (before the postscaler) is fed to the
Synchronous Serial Port module which optionally uses
it to generate shift clock.
FIGURE 9-1:
TIMER2 BLOCK DIAGRAM
Applicable Devices
61 62 62A R62 63 R63 64 64A R64 65 65A R65 66 67
Applicable Devices
61 62 62A R62 63 R63 64 64A R64 65 65A R65 66 67
Comparator
TMR2
Sets
interrupt
TMR2IF
TMR2 reg
output(1)
Reset
Postscaler
Prescaler
PR2 reg
2
Fosc/4
1:1 to 1:16
1:1, 1:4, 1:16
EQ
4
TMR2
ag bit,
Note
1:
TMR2 register output can be software selected by
the SSP Module as a baud clock.
FIGURE 9-2:
T2CON: TIMER2 CONTROL REGISTER (ADDRESS 12h)
U-0
R/W-0
—
TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON
T2CKPS1 T2CKPS0
R
= Readable bit
W = Writable bit
U
= Unimplemented bit,
read as ‘0’
- n = Value at POR reset
bit7
bit0
bit 7:
Unimplemented: Read as '0'
bit 6-3:
TOUTPS3:TOUTPS0: Timer2 Output Postscale Select bits
0000
= 1:1 postscale
0001
= 1:2 postscale
1111
= 1:16 postscale
bit 2:
TMR2ON: Timer2 On bit
1 = Timer2 is on
0 = Timer2 is off
bit 1-0:
T2CKPS1:T2CKPS0: Timer2 Clock Prescale Select bits
00
= 1:1 prescale
01
= 1:4 prescale
1x
= 1:16 prescale
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參數(shù)描述
AT90S2313-10PI 功能描述:8位微控制器 -MCU 2k bit RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
AT90S2313-10SC 功能描述:8位微控制器 -MCU 2K Flash 5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
AT90S231310SCSL383 制造商:Atmel Corporation 功能描述:
AT90S2313-10SI 功能描述:8位微控制器 -MCU 2K Flash 5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
AT90S2313-4PC 功能描述:8位微控制器 -MCU 2K Flash 3V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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