ST7LITEU05 ST7LITEU09 On-chip peripherals
11.1 Lite timer (LT)
11.1.1 Introduction
The Lite Timer can be used for general-purpose timing functions. It is based on a freerunning 13-bit upcounter with two software-selectable timebase periods, an 8-bit input capture register and watchdog function.
• Real-time clock
– 13-bit upcounter
– 1 ms or 2 ms timebase period (@ 8 MHz f
OSC
)
– Maskable timebase interrupt
• Input capture
– 8-bit input capture register (LTICR)
– Maskable interrupt with wakeup from Halt mode capability
• Watchdog
– Enabled by hardware or software (configurable by option byte)
– Optional reset on HALT instruction (configurable by option byte)
– Automatically resets the device unless disable bit is refreshed
– Software reset (forced watchdog reset)
– Watchdog reset status flag
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