Programmable I/O direction with resistive pull up/down control.
USB
Low Speed USB transceivers (1.5Mbps).
Conforms to USB 2.0 Low speed specifications.
6 MHz crystal cell supporting low USB speed. There are two capacitors built
in XI and XO pins, a 30pf from XI to ground and a 15pf from XO to ground;
therefore, the external capacitors for X'TAL or R oscillation may be omitted.
Supports one control endpoint and one data endpoint. They can be programmed
as IN or OUT endpoint.
Supports PS/2 interface control logic for combo function.
Timer
One 14-bit free-run timer with overflow interrupt and real time interrupt.
One 8-bit re-loadable timer, can be cascaded as a 16-bit timer.
Input Capture
Six Input-capture registers.
Selectable edge trigger for capture input.
Pulse or period measurement.
Reset Circuit
Low voltage detection (LVD).
Low voltage reset (LVR).
Watchdog Timer Reset.
Software Reset.
Power Saving Mode
STOP mode or WAIT (schedule wakeup) mode
One internal ring oscillator supporting scheduled wakeup.
Misc.
Built-in 3.3V regulator for USB and internal operation.
Package
Supports 20, 18, or 16, PDIP or SOP and 16 SSOP solutions.
Solutions
