参数资料
| 型号： | ATF16V8B-15PU |
| 厂商： | Atmel |
| 文件页数： | 18/26页 |
| 文件大小： | 0K |
| 描述： | IC PLD 15NS 20DIP |
| 标准包装： | 18 |
| 系列： | 16V8 |
| 可编程类型： | EE PLD |
| 宏单元数： | 8 |
| 输入电压： | 5V |
| 速度： | 15ns |
| 安装类型： | 通孔 |
| 封装/外壳： | 20-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 20-PDIP |
| 包装： | 管件 |
25
7707F–AVR–11/10
AT90USB82/162
6.
System Clock and Clock Options
6.1
Clock Systems and their Distribution
Figure 6-1 presents the principal clock systems in the AVR and their distribution. All of the clocks
need not be active at a given time. In order to reduce power consumption, the clocks to modules
not being used can be halted by using different sleep modes, as described in “Power Manage-
ment and Sleep Modes” on page 41. The clock systems are detailed below.
Figure 6-1.
Clock Distribution
6.1.1
CPU Clock – clk
CPU
The CPU clock is routed to parts of the system concerned with operation of the AVR core.
Examples of such modules are the General Purpose Register File, the Status Register and the
data memory holding the Stack Pointer. Halting the CPU clock inhibits the core from performing
general operations and calculations.
6.1.2
I/O Clock – clk
I/O
The I/O clock is used by the majority of the I/O modules, like Timer/Counters, SPI, and USART.
The I/O clock is also used by the External Interrupt module, but note that some external inter-
rupts are detected by asynchronous logic, allowing such interrupts to be detected even if the I/O
clock is halted.
6.1.3
Flash Clock – clk
FLASH
The Flash clock controls operation of the Flash interface. The Flash clock is usually active simul-
taneously with the CPU clock.
General I/O
Modules
CPU Core
RAM
clk
I/O
AVR Clock
Control Unit
clk
CPU
Flash and
EEPROM
clk
FLASH
Source clock
Watchdog Timer
Reset Logic
Clock
Multiplexer
Watchdog clock
Calibrated RC
Oscillator
Crystal
Oscillator
External Clock
System Clock
Prescaler
Clock
Switch
Watchdog
Oscillator
USB
clk
USB (48MHz)
PLL Clock
Prescaler
clk
Pllin (8MHz)
USB PLL
X6
clk
XTAL (2-16 MHz)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ATF16V8B-15SC | 功能描述:EEPLD - 电子擦除可编程逻辑设备 10NS250 GATES 20 PIN5V - 15NS RoHS:否 制造商:Atmel 逻辑系列:ATF16V8BQL 最大工作频率:62 MHz 可编程输入/输出端数量:20 电源电流:20 mA 延迟时间:15 ns 每个宏指令的积项数:8 电源电压-最大:5.5 V 电源电压-最小:4.5 V 大电池数量:8 最小工作温度:- 40 C 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP-20 |
| ATF16V8B-15SI | 功能描述:EEPLD - 电子擦除可编程逻辑设备 250 Gate RoHS:否 制造商:Atmel 逻辑系列:ATF16V8BQL 最大工作频率:62 MHz 可编程输入/输出端数量:20 电源电流:20 mA 延迟时间:15 ns 每个宏指令的积项数:8 电源电压-最大:5.5 V 电源电压-最小:4.5 V 大电池数量:8 最小工作温度:- 40 C 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP-20 |
| ATF16V8B-15SI SL383 | 制造商:Atmel Corporation 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz CMOS Technology 5V 20-Pin SOIC T/R |
| ATF16V8B-15SU | 功能描述:EEPLD - 电子擦除可编程逻辑设备 15 ns 20 I/O Pins 8 macorcells 8 reg RoHS:否 制造商:Atmel 逻辑系列:ATF16V8BQL 最大工作频率:62 MHz 可编程输入/输出端数量:20 电源电流:20 mA 延迟时间:15 ns 每个宏指令的积项数:8 电源电压-最大:5.5 V 电源电压-最小:4.5 V 大电池数量:8 最小工作温度:- 40 C 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP-20 |
| ATF16V8B-15SU SL383 | 制造商:Atmel Corporation 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz 5V 20-Pin SOIC 制造商:Atmel Corporation 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz CMOS Technology 5V 20-Pin SOIC 制造商:Atmel 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz CMOS Technology 5V 20-Pin SOIC 制造商:Atmel 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz 5V 20-Pin SOIC |
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