PCA1462U 32 kHz watch circuits with adaptive motor pulse
The PCA146x series devices are CMOS integrated circuits specially suited for battery-operated, quartz-crystal-controlled wrist-watches, with a bipolar stepping motor.
PCA1462U should not be used for new designs
产品特点 Features
- 32 kHz oscillator, amplitude regulated with excellent frequency stability
- High immunity of the oscillator to leakage currents
- Time calibration electrically programmable and reprogrammable (via EEPROM)
- A quartz crystal is the only external component required
- Very low current consumption; typically 170 nA
- Output for bipolar stepping motors of different types
- Up to 50% reduction in motor current compared with conventional circuits, by self adaption of the motor pulse width to match the required torque of the motor
- No loss of motor steps possible because of on-chip detection of the induced motor Voltage
- Detector for lithium or silver-oxide battery Voltage levels
- Indication for battery end-of-life
- Stop function for accurate timing
- Power-on reset for fast testing
- Various test modes for testing the mechanical parts of the watch and the IC
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应用
- Digital fibre optic receiver in short, medium and long haul optical telecommunications transmission systems or in high speed data networks
- Wideband RF gain block
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封装
| 型号 |
可订购的器件编号 |
订购码 (12NC) |
产品状态 |
封装 |
| PCA1462U/F2 |
9352 398 00026 |
PCA1462U/F2,026 |
量产 |
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订货和供应
| 型号 |
订购码 (12NC) |
可订购的器件编号 |
化学成分 |
| PCA1462U/F2 |
9352 398 00026 |
PCA1462U/F2,026 |
PCA1462U/F2 |
PCA1462U 技术支持
| 档案名称 |
标题 |
类型 |
格式 |
| PCA1462U |
Voltage regulator diodes |
Data sheet |
pdf |
| AN10706 |
Handling bare die
|
Application note |
pdf |
| AN10853 |
ESD and EMC sensitivity of IC
|
Application note |
pdf |
| UM10569 |
Store and transport requirements
|
User manual |
pdf |
