| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| BQ4845S-A4NTR | RTC IC W NVSRAM CONTROL, WATCHDOG TIMER, UP RESET, INTERRUPTS AND BATTERY LOW WARNING | Texas-Instruments | DW | 28 | - | - | 1 M |
| BQ4845S-A4TR | RTC IC W NVSRAM CONTROL, WATCHDOG TIMER, UP RESET, INTERRUPTS AND BATTERY LOW WARNING | Texas-Instruments | DW | 28 | - | - | 1 M |
| BQ4845YS-A4NTR | RTC IC W NVSRAM CONTROL, WATCHDOG TIMER, UP RESET, INTERRUPTS AND BATTERY LOW WARNING | Texas-Instruments | DW | 28 | - | - | 1 M |
| BQ4845YS-A4TR | RTC IC W NVSRAM CONTROL, WATCHDOG TIMER, UP RESET, INTERRUPTS AND BATTERY LOW WARNING | Texas-Instruments | DW | 28 | - | - | 1 M |
| BQ4850YMA-85 | RTC MODULE WITH 512KX8 NVSRAM | Texas-Instruments | - | - | - | - | 619 K |
| SA555D | PRECISION TIMER | Texas-Instruments | D | 8 | - | - | 253 K |
| SA555DR | PRECISION TIMER | Texas-Instruments | D | 8 | - | - | 253 K |
| SA555P | PRECISION TIMER | Texas-Instruments | P | 8 | - | - | 253 K |
| SA556DR | DUAL PRECISION TIMER | Texas-Instruments | D | 14 | -40°C | 85°C | 71 K |
| SA556N | DUAL PRECISION TIMER | Texas-Instruments | N | 14 | -40°C | 85°C | 71 K |
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