This manual describes the use of HK1235 in detail, including pin assignment, read mode, write mode, data storage mode, factory status and transportation, acceptance and service.
This manual describes the HK1235 memory chip from Hongkong Semiconductor. It includes the pin arrangement, read and write modes, data‑retention behavior, and the electrical characteristics required for proper operation.
Additional sections cover factory state, shipping limits, acceptance testing, warranty terms, and detailed specifications such as voltage ranges, timing parameters, and power‑up/down requirements. This manual is written in Chinese.
| Power Supply Voltage (Vcc) – HK1235 | 4.5 V min / 5.0 V typ / 5.5 V max |
|---|---|
| Power Supply Voltage (Vcc) – HK1235N | 4.75 V min / 5.0 V typ / 5.5 V max |
| Write Protection Voltage – HK1235 | 4.25 V min / 4.37 V typ / 4.5 V max |
| Maximum Pin Voltage to Ground | -0.3 V to 5.0 V |
| Data Retention Time (no power) | 10 years |
Each pin may be driven between –0.3 V and 5.0 V relative to ground.
The chip can retain data for up to 10 years when unpowered.
The supply voltage (Vcc) must be between 4.5 V and 5.5 V (typical 5.0 V).
Write protection activates at about 4.25 V (typical 4.37 V, max 4.5 V).