HD6473032F16 Datasheet, PDF (176/847 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 7 Refresh Controller
Features as a Pseudo-Static RAM Refresh Controller
• RFSH signal output for refresh control
• Software-selectable refresh interval
• Software-selectable self-refresh mode
• Wait states can be inserted
Features as an Interval Timer
• Refresh timer counter (RTCNT) can be used as an 8-bit up-counter
• Selection of seven counter clock sources: φ/2, φ/8, φ/32, φ/128, φ/512, φ/2048, φ/4096
• Interrupts can be generated by compare match between RTCNT and the refresh time constant
register (RTCOR)
Rev. 3.00 Mar 21, 2006 page 146 of 814
REJ09B0302-0300