Product Description:

The FT62F21x is a compact instruction set IO type 8-bit microcontroller with 4T instruction cycle, specially designed for low cost timer applications. This series of chips has a flexible use of timer/counter, which can provide external event counting function, while its clock source is selectable, and it can continue to work in low-power mode.4-input capacitive touch-sensing module, 6 pins with independent pull-ups, and 2 can directly drive LEDs to save current-limiting resistors. Built-in watchdog timer, plus excellent anti-interference and ESD protection features, to ensure that the chip can then operate reliably in harsh environments. The chips are available in SOT23-6 and SOP8 packages.

Application areas:

Touch dimming, chargers, alarm clocks and home 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)

Memory Architecture

Programme memory: 1k x 14bits

Data RAM: 64 x 8bits

Data EEPROM: 128x 8bits

8-layer 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 IOs

6 port change interrupts

6 pins with independent pull-up function, 2 direct drive LEDs

1 external reset pin

Timer Build-in Touch

1 x 8bit Timer0, clock source optional

1 x 16bit Timer2, clock source selectable

16-bit watchdog with 3-bit post divider

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 detects external inputs and can be used as a comparator.

Support ISP and online debugging OCD

Operating temperature range: -40°C~85°C