The FT62F21x is a streamlined instruction set, I/O type 8-bit microcontroller with a 4T instruction cycle, specifically designed for low-cost timer applications. This series of chips features a flexible timer/counter, providing external event counting functionality, while its clock source is selectable and continues to operate in low-power mode. A 4-input capacitive touch sensing module, 6 pins with independent pull-ups, and 2 pins that can directly drive LEDs, saving current-limiting resistors. A built-in watchdog timer, plus excellent anti-interference and ESD protection features, ensure reliable operation of the chip in harsh environments. This series of chips is available in SOT23-6 and SOP8 packages.

Product Introduction:

The FT62F21x is a reduced instruction set IO type 8-bit microcontroller with a 4T instruction cycle, specifically designed for low-cost timer applications. This series of chips features a flexible timer/counter that provides external event counting functionality, and its clock source is selectable, allowing continued operation in low-power mode. A 4-input capacitive touch sensing module, 6 pins with independent pull-ups, and 2 pins that can directly drive LEDs, saving current-limiting resistors. A built-in watchdog timer, plus excellent anti-interference and ESD protection characteristics, ensure reliable operation of the chip in harsh environments. This series of chips is available in SOT23-6 and SOP8 packages.

Application Areas:

Touch dimming, chargers, alarm clocks, and household appliances, etc.

CPU Characteristics:

• Operating Voltage: 1.9V~5.5V
• RISC architecture, only 37 instructions to learn
• Instruction Cycle: 4T
• Minimum instruction cycle is 250ns, 16MHz@4T (VDD≥2.7V)
• Storage Architecture
• Program Memory: 1k x 14bits
• Data RAM: 64 x 8bits
• Data EEPROM: 128 x 8bits
• 8-level hardware stack
• Low-power mode SLEEP

Peripheral Characteristics:

• Clock Source
• 16M high-speed, high-precision HIRC
• 32K low-speed, low-power LIRC
• External clock input
• Up to 6 general-purpose IO
• 6 port change interrupts
• 6 pins with independent pull-up function, 2 pins for direct LED drive
• 1 external reset pin
• Timer Build-in Touch
• 1 x 8bit Timer0, selectable clock source
• 1 x 16bit Timer2, selectable clock source
• 16-bit watchdog with 3-bit prescaler
• Power-on reset delay counter
• Low-voltage reset LVR: 2.0V/2.2V/2.5V/2.8V/3.1V/3.6V/4.1V
• Low-voltage detection LVD: 1.2V/1.8V/2.0V/2.4V/2.7V/3.0V/3.6V/4.0V, or detect external input, can be used as a comparator
• Supports ISP and online debugging OCD
• Operating temperature range: -40℃~85℃