參數(shù)資料
型號(hào)： AT43USB353M-AC
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
中文描述： 8-BIT, MROM, 24 MHz, RISC MICROCONTROLLER, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48
文件頁數(shù)： 41/95頁
文件大?。?/td> 568K
代理商： AT43USB353M-AC
41
AT43USB353M
3307B–USB–4/04
The Stop condition provides a Timer Enable/Disable function. The CK down divided modes
are scaled directly from the 12 MHz input clock.
Timer/Counter1 – TCNT1H and TCNT1L
This 16-bit register contains the prescaled value of the 16-bit Timer/Counter1. To ensure that
both the high and low bytes are read and written simultaneously when the CPU accesses
these registers, the access is performed using an 8-bit temporary register (TEMP). This tem-
porary register is also used when accessing OCR1A, OCR1B and ICR1. If the main program
and also interrupt routines perform access to registers using TEMP, interrupts must be dis-
abled during access from the main program and from interrupt routines if interrupts are
allowed from within interrupt routines.
TCNT1 Timer/Counter1 Write:
When the CPU writes to the high byte TCNT1H, the written data is placed in the TEMP regis-
ter. Next, when the CPU writes the low byte TCNT1L, this byte of data is combined with the
byte data in the TEMP register, and all 16 bits are written to the TCNT1 Timer/Counter1 regis-
ter simultaneously. Consequently, the high byte TCNT1H must be accessed first for a full 16-
bit register write operation.
TCNT1 Timer/Counter1 Read:
When the CPU reads the low byte TCNT1L, the data of the low byte TCNT1L is sent to the
CPU and the data of the high byte TCNT1H is placed in the TEMP register. When the CPU
reads the data in the high byte TCNT1H, the CPU receives the data in the TEMP register.
Consequently, the low byte TCNT1L must be accessed first for a full 16-bit register read
operation.
The Timer/Counter1 is realized as an up or up/down (in PWM mode) counter with read and
write access. If Timer/Counter1 is written to and a clock source is selected, the
Timer/Counter1 continues counting in the timer clock cycle after it is preset with the written
value.
Bit
15
14
13
12
11
10
9
8
$2D ($4D)
MSB
–
–
–
–
–
–
–
TCNT1H
$2C ($4C)
–
–
–
–
–
–
–
LSB
TCNT1L
7
6
5
4
3
2
1
0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
相關(guān)PDF資料
PDF描述
AT43USB355E-AC Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355E-AU Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB355 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB355_02 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355_06 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355E-AC 功能描述:8位微控制器 -MCU USB GAME CONTROL w/EMBED HUB-COM TEMP 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(chǔ)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
AT43USB355E-AU 功能描述:8位微控制器 -MCU USB GAME CONTROL w/ EMBED HUB 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(chǔ)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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