HD404829R Datasheet, PDF (141/149 Pages) Renesas Technology Corp – AS Microcomputer Incorporating a LCD controller/Driver Circuit

HD404829R Series
Notes: 1. With a crystal oscillator, V_cc=3.0V to 6.0V.
2. There are three oscillator stabilization times.
(1) At power on, the time between the point where V_cc reaches 2.7V and the point where
oscillation has stabilized.
(2) At clearing stop mode, the time between the point where the RESET pin reaches the high
level and the point where oscillation has stabilized.
(3) At clearing stop mode, the time between the point where the STOPC pin reaches the low
level and the point where oscillation has stabilized.
At power on or when stop mode is cleared, RESET or STOPC must be input for at least
t_RC to ensure the oscillation stabilization time.
Since the oscillator stabilization time will depend on circuit constants and stray
capacitances, determine the oscillator by consulting with the oscillator’s manufacturer.
Be sure to set miscellaneous register (MIS) bits MIS1 and MIS0 to match the system clock
oscillator stabilization time.
3. Refer to figure 99.
4. Refer to figure 100. The t_cyc unit applies when the MCU is in standby or active mode.
The t_subcyc unit applies when the MCU is in watch or subactive mode.
5. Refer to figure 101.
6. Refer to figure 102.
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