HOLTEK New BH67F2493 Impedance and Electrochemical MCU
Holtek continues with its development of impedance and electrochemical MCUs and now follows with the launch of its new Flash MCU, the BH67F2493. The device has a high level of functional integration, high accuracy and low noise. Compared with the previous BH67F2476 device, the minimum operating voltage has been reduced to 1.8V and the program ROM/EEPROM storage capacity has been increased. The device is suitable for use in Glucose Meters, Glucose and Blood Pressure two-in-one Meters, Hemoglobin Testers and other related products. The device includes a fully integrated phase angle and electrochemical measurement AFE circuit, allowing AC impedance, phase angle and various other electrochemical physiological parameters to be directly measured by hardware. Amplifier gains and various parameters can also be controlled by software. With its internal 24-bit A/D converter, the device provides a high accuracy measurement function, which can implement glucose and other measurements. The integrated display driver circuit can directly drive LCD panels, offering internal charge pump regulator voltage and low power consumption features. The digital output interfaces include I²C, SPI and UART interface types. With regard to memory, the device contains a 64K×16 of Flash Program Memory, a 3072×8 RAM and an 8192×8 EEPROM. In addition to store large volumes of measurement data, the EEPROM can be used to store adjustment product parameters and calibration parameters. As for packaging, the device is supplied in 64-pin LQFP and 80-pin LQFP package types. The series of devices are pin-compatible.
