Renesas Single-Chip Microcomputer SH7203 Technické informace stáhnout pdf (Strana 21)

6.13.Oscillator Sources

A crystal oscillator is fitted on the CPU board and used to supply various clock inputs to the Renesas microcontroller. Table 6-33 details

the oscillators that are fitted and alternative footprints provided on this CPU board:

Reference Component

Crystal (X1) Fitted 16.6675 MHz (HC49/4H package)

Crystal (X2) Fitted 32.768 kHz (90SMX package)

Crystal (X3) Fitted 24.576 MHz (HC49/4H)

Crystal (X4) Fitted 48 MHz (HC49/4H package)

Table 6-33 Crystal Oscillators

6.14. Reset Circuit

The CPU Board includes a Reset IC MAX6863 (U3) to meet the minimum reset period of 10ms. Please refer to the hardware manual for

more information on the requirements of the reset circuit. Please check the reset requirements carefully to ensure the reset circuit on the

user’s board meets all the reset timing requirements.

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Renesas Single-Chip Microcomputer SH7203 Technické informace Strana 21