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wiki:cmp:freq:rtc:start
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Содержание
RTC
| USE STM Internal RTC | https://embedded-lab.com/blog/stm32s-internal-rtc/ |
| Atmel RTC calibration appnote | https://ww1.microchip.com/downloads/en/Appnotes/Atmel-42251-RTC-Calibration-and-Compensation_AP-Note_AT03155.pdf |
| Page | P/N | Manufacturer | Photo | Description | Type | Kind | Vin min | Vin max | Current | Case | Links | IT | marking | p2p group |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| bl5372 | BL5372 | Belling | IC-FREQ-RTC | IC | RTC | 1.8 | 5.5 | 400nA | SOIC8 | link | ||||
| ds3231mz | DS3231MZ+ | Maxim | IC-FREQ-RTC | IC | RTC | 150nA | SOIC8 | |||||||
| pcf8523tk_1_118 | PCF8523TK/1,118 | NXP | IC-FREQ-RTC | IC | RTC | 150nA | ||||||||
| ds1307zm_tr | DS1307ZM/TR | HGSEMI | IC-FREQ-RTC | IC | RTC | 5 | 5 | 500nA | SOIC8 | |||||
| ds1302z | DS1302Z | JSMICRO | IC-FREQ-RTC | IC | RTC | 2 | 5.5 | 300nA | SOIC8 | link | ||||
| ins5699s | INS5699S | DaPu | IC-FREQ-RTC | IC | RTC | 2.5 | 5.5 | SMD3225 | ||||||
| ins5699c | INS5699C | DaPu | IC-FREQ-RTC | IC | RTC | 1.6 | 5.5 | SMD3225 | ||||||
| ins5101a | INS5101A | DaPu | IC-FREQ-RTC | IC | RTC | SOIC8 | ||||||||
| rv-3032-c7 | RV-3032-C7 | Micro-Crystal | IC-FREQ-RTC | IC | RTC | 1.3 | 5.5 | link | ||||||
| tr8804 | TR8804 | TKD | IC-FREQ-RTC | IC | RTC | 1.65 | 5.5 | link |
| TR8804 | TKD | 1.65-5.5V | I2C | int xtal | link | |||||||
| RV-3032-C7 | Micro-Crystal | 2.5ppm | -40…+85C | 1.98$ (при заказе 3000 шт.) | 1.3-5.5V | I2C | int xtal | link | ||||
| INS5101A | DaPu | I2C | SOIC8 | |||||||||
| INS5699C | DaPu | 3.4ppm | -40…+85C | 1.49$ (при заказе 3000 шт.) | 1.6-5.5V | I2C | TCXO | SMD3225 | ||||
| INS5699S | DaPu | 5ppm | -40…+85C | 1.298$ (при заказе 3000 шт.) | 2.5-5.5V | I2C | TCXO | SMD3225 | ||||
| DS1302Z | JSMICRO | 300nA | 31×8 | 0…+70C | 2-5.5V | 3WIRE (SPI) | SOIC8 | trickle-charger | link | |||
| DS1307ZM/TR | HGSEMI | 500nA | 56×8 | 5V | I2C | SOIC8 | ||||||
| PCF8523TK/1,118 | NXP | 150nA | I2C | |||||||||
| DS3231MZ+ | Maxim | 5ppm | I2C | SOIC8 | ||||||||
| BL5372 | Belling | 400nA | - | -40…+85C | 1.8-5.5V | I2C | SOIC8 | link |
Схемотехника
Калибровка
ICs
BL5372
BL5372 - аналог Dallas DS1337, однако I2C обмен отличается ???
PCF8523TK/1,118
Clock operating voltage: 1.0 V to 5.5 V
Vth(sw)bat is the battery switch threshold voltage. Typical value is 2.5 V.
When VBAT drops below the threshold value Vth(bat)low (typically 2.5 V), the BLF flag (register Control_3) is set to indicate that the battery is low and that it must be replaced.
VBAT battery supply voltage power management function active 1.8 - 5.5 V
Vth(sw)bat battery switch threshold voltage 2.1 2.5 2.7 V
wiki/cmp/freq/rtc/start.1720434330.txt.gz · Последнее изменение: 2024/07/08 10:25 — Roman Abakumov
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