Watchdog Timer Operating Modes - Renesas F-ZTAT H8 Series Hardware Manual

8-bit single-chip microcomputer

Hide thumbs Also See for F-ZTAT H8 Series:

Table of Contents

Example: With 30 ms overflow period when φ = 4 MHz (φ/8192 selected)

Therefore, 256 – 15 = 241 (H'F1) is set in TCW.

H'F1 written

Internal reset signal

Watchdog Timer Operating Modes

Watchdog timer operating modes are shown in table 9.15.

Table 9.15 Watchdog Timer Operating Modes

H'F1 written to TCW

Figure 9.9 Example of Watchdog Timer Operation

512 φosc clock cycles

Subactive Subsleep

Rev.3.00 Jul. 19, 2007 page 247 of 532

TCW overflow

Reset generated

REJ09B0397-0300