OKS1245 is a non-volatile memory with software password, which is the same as ordinary SRAM, EEPROM and general NVRAM in pin arrangement, except that it adds software lock function on write signal on the basis of general NVRAM composed of lithium battery and anti-interference circuit and SRAM.
This manual describes the pin layout and functional description of the OKS1245 non‑volatile memory chip, including pin assignments, read and write modes, and the software lock mechanism. It also details the power‑up and power‑down behavior, write‑protect features, and the conditions for reliable data retention.
Additional sections cover environmental specifications such as temperature and storage limits, transport handling, acceptance testing, and a full set of electrical parameters (supply voltage, leakage currents, write‑protect voltages, and data retention time). The document is intended for engineers and technicians integrating the chip into their designs. This manual is written in Chinese.
| Power Supply Voltage (COKS1245) VCC | Min 4.5 V, Typ 5.0 V, Max 5.5 V |
|---|---|
| Power Supply Voltage (COKS1245N) VCC | Min 4.75 V, Typ 5.0 V, Max 5.25 V |
| Write Protection Voltage (COKS1245) VTP | Min 4.25 V, Typ 4.37 V, Max 4.5 V |
| Write Protection Voltage (COKS1245N) VTP | Min 4.5 V, Typ 4.75 V, Max 4.85 V |
The chip operates normally when VCC is above 4.5 V (or 4.75 V for the COKS1245N version).