HD6413003RF Datasheet, PDF (154/715 Pages) Renesas Technology Corp – Microcontroller (MCU)

Features as an Interval Timer
• Refresh timer counter (RTCNT) can be used as an 8-bit up-counter
• Selection of seven counter clock sources: ø/2, ø/8, ø/32, ø/128, ø/512, ø/2048, ø/4096
• Interrupts can be generated by compare match between RTCNT and the refresh time constant
register (RTCOR)
7.1.2 Block Diagram
Figure 7-1 shows a block diagram of the refresh controller.
ø/2, ø/8, ø/32,
ø/128, ø/512,
ø/2048, ø/4096
Refresh signal
Clock selector
Comparator
Control logic
CMI interrupt
Module data bus
Legend
RTCNT: Refresh timer counter
RTCOR: Refresh time constant register
RTMCSR: Refresh timer control/status register
RFSHCR: Refresh control register
Figure 7-1 Block Diagram of Refresh Controller
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