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STMicroelectronics&STM32L151RD
The STMicroelectronics STM32L151RD is an Operating conditions - Operating power supply range: 1.65 to 3.6 V (without BOR) 1.80 to 3.6 V (with BOR) - Temperature range: -40 to 85 °C Low power features - 4 modes: Sleep, Low-power run, Low-power sleep, Stop with RTC, Stop, Standby - Dynamic core voltage scaling down to 233 uA/MHz - Ultralow leakage per I/O: 50 nA - Fast wakeup from Stop: 8 us - Three wakeup pins Core: ARM 32-bit Cortex-M3 CPU - 32 MHz maximum frequency, 33.3 DMIPS peak - Memory protection unit Reset and supply management - Low power, ultrasafe BOR with 5 selectable thresholds - Ultralow power POR/PDR - Programmable voltage detector (PVD) Clock management - 1 to 24 MHz crystal oscillator - 32 kHz oscillator for RTC with calibration - Internal 16 MHz factory-trimmed RC - Internal 37 kHz low consumption RC - Internal multispeed low power RC, 64 kHz to 4 MHz - PLL for CPU clock and USB (48 MHz) Low power calendar RTC - Alarm, periodic wakeup from Stop/Standby Memories - 384 Kbyte Flash memory with ECC - 4 Kbyte of data EEPROM with ECC - 48 Kbytes of RAM Up to 115 fast I/Os all mappable on 16 external interrupt vectors Development support - Serial wire debug, JTAG and trace DMA: 7-channel DMA controller LCD 8 × 40 or 4 × 44 with step-up converter 12-bit ADC up to 1 Msps/24 channels - Temperature sensor and internal voltage reference - Operates down to 1.8 V 2 × 12-bit DACs with output buffers 2 ultralow power comparators - Window mode and wakeup capability 10 timers: - 6 × 16-bit general-purpose timers - 2 × 16-bit basic timers - 2 × watchdog timers (independent and window) Up to 8 communication interfaces - Up to 2 × I2C interfaces (SMBus/PMBus) - Up to 3 × USARTs (ISO 7816 interface, LIN, IrDA capability, modem control) - Up to 2 × SPIs (16 Mbit/s) - USB 2.0 full-speed interface CRC calculation unit, 96-bit unique ID.
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请问,STM32L151的电池引脚是哪个?我之前用的VLCD，一看不对呵
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请问,STM32L151的电池引脚是哪个?我之前用的VLCD，后来一看不对，如果真是不具备VBAT，那么ST当前的这个设计，还是跟以前的F103 RTC一样，是鸡肋了
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如你所说，不具备VBAT，也就是换成了VLCD；
L1系列主要是低功耗应用的，ST为了实现引脚兼容；
肯定有所取舍，不可能2者都具备；
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mmuuss586 发表于
如你所说，不具备VBAT，也就是换成了VLCD；
L1系列主要是低功耗应用的，ST为了实现引脚兼容；
有没有具备这个VBAT的低功耗IC啊？是什么型号？
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arefeng 发表于
有没有具备这个VBAT的低功耗IC啊？是什么型号？
你看下，F0,F0L,F1L的其它型号或系列；
我这有选型手册，但是不知道哪个型号适合你；
还有STM32F411，只有100uA/MHZ;
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L15xx系列的RTC是有年月日功能的，比103的要强多了，只是在设计的时候的，没有将VBat独立出来，和主电源公用引脚，设计的时候，注意在Standbyby下打开RTC，关闭其它外设，与独立VBAT功耗也没差太多。
不同的设计需求满足不同的要求，能用就好。
ST6、ST10、ST7、STR7、STR9、STM8S、STM8L、STM32、PowerPC，差不多ST曾经主流卖过的都用过。。。
不灌水，不废话。
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这个脚没有，用起来确实很不好。如果纯电池供电的还是不错的。
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这个脚没有，用起来确实很不好。如果纯电池供电的还是不错的。
VBAT = 1.8 to 3.6 V: power supply for RTC, external clock 32 kHz oscillator and backup
registers (through power switch) when VDD is not present.
有个问题想请教，纯电池供电的应用，为什么Vbat不直接1.8V~4.2V呢？
锂电供电，是否必须前端接一个DCDC，LDO降压到2.5V？
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对，电压不要超过3.6V。4.2直接供电是肯定不成的。
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STMicroelectronics&STM32L151R6
The STMicroelectronics STM32L151R6 is an Operating conditions - Operating power supply range: 1.65 V to 3.6 V - Temperature range: -40 to 85 C Low power features - 7 modes: Sleep, Low-power run, Low power sleep, Stop with RTC, Stop, Standby with RTC, Standby - Dynamic core voltage scaling down to 230 uA/MHz (from Flash) - Ultralow leakage per I/O: 50 nA - Three wakeup pins Core: ARM 32-bit Cortex-M3 CPU - 32 MHz maximum frequency, 33.3 DMIPS peak - Memory protection unit Reset and supply management - Low power, ultrasafe BOR with 5 selectable thresholds - Ultralow power POR/PDR - Programmable voltage detector (PVD) Clock management - 1 to 24 MHz crystal oscillator - 32 kHz oscillator for RTC with calibration - Internal 16 MHz factory-trimmed RC - Internal 37 kHz low consumption RC - Internal multispeed low power RC, 64 kHz to 4.1 MHz - PLL for CPU clock and USB (48 MHz) Low power calendar RTC - Alarm, periodic wakeup from Stop/Standby Memories - Up to 128 Kbyte of Flash memory with ECC - 4 Kbyte of data EEPROM with ECC - Up to 16 Kbyte of RAM Up to 83 fast I/Os all mappable on 16 external interrupt vectors Development support - Serial wire debug, JTAG and trace - Readout protection and JTAG fuse DMA: 7-channel DMA controller, supp. timers, ADC, SPIs, I2Cs and USARTs LCD 8 x 40 or 4 x 44 with step-up converter 12-bit ADC up to 1 Msps/24 channels - Temperature sensor and internal voltage reference - Operates down to 1.8 V 2 x 12-bit DACs with output buffers 2 ultralow power comparators - Window mode and wakeup capability 10 timers: - 6 x 16-bit general-purpose timers, each with up to 4 IC/OC/PWM channels - 2 x 16-bit basic timers - 2 x watchdog timers (independent and window) Up to 8 communication interfaces - Up to 2 x I2C interfaces (SMBus/PMBus) - Up to 3 x USARTs (ISO 7816 interface, LIN, IrDA capability, modem control) - Up to 2 x SPIs (16 Mbit/s) - USB 2.0 full-speed interface CRC calculation unit, 96-bit unique ID.
Development ToolsCompiler, Assembler, Linker, Debugger
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2,300,193&bytes
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476,022 bytes
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Device Programmers
Dataman Programmers Ltd.
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