參數(shù)資料
型號(hào): ATMEGA8HVA-4CKU
廠商: Atmel
文件頁(yè)數(shù): 30/196頁(yè)
文件大小: 0K
描述: MCU AVR 8K FLASH 4MHZ 36-LGA
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
megaAVR Introduction
標(biāo)準(zhǔn)包裝: 364
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 4MHz
連通性: SPI
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 7
程序存儲(chǔ)器容量: 8KB(4K x 16)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 9 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 5x12b
振蕩器型: 外部
工作溫度: -20°C ~ 85°C
封裝/外殼: 36-LGA
包裝: 托盤
配用: ATSTK600-ND - DEV KIT FOR AVR/AVR32
ATSTK500-ND - PROGRAMMER AVR STARTER KIT
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125
8024A–AVR–04/08
ATmega8HVA/16HVA
The Current Battery Protection (CBP) monitors the cell current by sampling the shunt resistor
voltage at the PI/NI input pins. A differential operational amplifier amplifies the voltage with a
suitable gain. The output from the operational amplifier is compared to an accurate, programma-
ble On-chip voltage reference by an Analog Comparator. If the shunt resistor voltage is above
the Detection level for a time longer than the corresponding Protection Reaction Time, the chip
activates Current Protection. A sampled system clocked by the internal ULP Oscillator is used
for Short-circuit, Over-current, and High-current Protection. This ensures a reliable clock source,
offset cancellation and low power consumption.
23.3
Short-circuit Protection
The Short-circuit detection is provided to enable a fast response time to very large discharge
currents. If the voltage at the PI/NI pins is above the Short-circuit Detection Level for a period
longer than Short-circuit Reaction Time, the Short-circuit Protection is activated.
When the Short-circuit Protection is activated, the external D-FET and C-FET are disabled and a
Current Protection Timer is started. This timer ensures that the D-FET and C-FET are disabled
for at least one second. The application software must then set the DFE and CFE bits in the FET
Control and Status Register to re-enable normal operation. If the D-FET is re-enabled before the
cause of the short-circuit condition is removed, the Short-circuit Protection will be activated
again.
23.4
Discharge Over-current Protection
If the voltage at the PI/NI pins is above the Discharge Over-current Detection level for a time
longer than Over-current Protection Reaction Time, the chip activates Discharge Over-current
Protection.
When the Discharge Over-current Protection is activated, the external D-FET and C-FET are
disabled and a Current Protection Timer is started. This timer ensures that the FETs are dis-
abled for at least one second. The application software must then set the DFE and CFE bits in
the FET Control and Status Register to re-enable normal operation. If the D-FET is re-enabled
while the loading of the battery still is too large, the Discharge Over-current Protection will be
activated again.
23.5
Charge Over-current Protection
If the voltage at the PI/NI pins is above the Charge Over-current Detection level for a time longer
than Over-current Protection Reaction Time, the chip activates Charge Over-current Protection.
When the Charge Over-current Protection is activated, the external D-FET and C-FET are dis-
abled and a Current Protection Timer is started. This timer ensures that the FETs are disabled
for at least one second. The application software must then set the DFE and CFE bits in the FET
Control and Status Register to re-enable normal operation. If the C-FET is re-enabled and the
charger continues to supply too high currents, the Charge Over-current Protection will be acti-
vated again.
23.6
Discharge High-current Protection
If the voltage at the PI/NI pins is above the Discharge High-current Detection level for a time
longer than High-current Protection Reaction Time, the chip activates Discharge High-current
Protection.
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ATMEGA8HVA-4CKUR 功能描述:8位微控制器 -MCU AVR 8KB FLSH 512B EE 1KB SRAM - 4 MHZ 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
ATMEGA8HVA-4TU 功能描述:8位微控制器 -MCU AVR 8KB, 512B EE 4MHz 1KB SRAM 1.8-9V 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
ATMEGA8HVA-4TUR 功能描述:8位微控制器 -MCU AVR 8KB FLSH 512B EE 1KB SRAM - 4 MHZ 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
ATMEGA8HVD-4MX 功能描述:8位微控制器 -MCU AVR 8KB, 512B EE 4MHz 1KB SRAM 2.1-8V 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
ATMEGA8L-8AC 功能描述:8位微控制器 -MCU AVR 8K FLASH 512B EE 1K SRAM ADC 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(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