The maximum operating frequency of the system clock is 16MHz, which is an internal high frequency 16MHz RC oscillating clock source
Supports a maximum of 14 I/O ports
8K Word FLASH program memory (where the last 1 page is fixed as Data FLASH data memory)
Support for IAP operations, table lookup reading, page erase and single address programming
1K Byte SRAM Data storage
Support for online programming (ISP) interfaces
Supports online debugging (ICD)
An 8-bit timer
Two 16-bit multifunctional timing/counters
The PWM output duty ratio can be set independently
PWM output polarity can be set independently
Supports 7 operating modes: timer mode, capture mode, comparison mode, PWM mode, single pulse mode, off function mode, slave mode
One way high speed asynchronous transceiver UART
One I2C bus
ADC: 12-bit precision, 7+1 channel (ES7P1391FGSD) (7 external channels optional +1 internal channels optional), 8+1 channel (ES7P1391FGSF) (8 external channels optional +1 internal channels optional)

Please refer to the Chinese version website for all documents