M16C62_M Datasheet, PDF (572/615 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

Appendix 1
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Does not instruction DMA transfer occur between the instruction writing is enabled in the protect
register and the instruction writing in the port P9 direction register starts?
Is writing enabled in the protect register before writing in the SI/Oi (i=3,4) control register (address
036216, 036616)?
Is writing effectuated in the SI/Oi (i=3,4) control register by the next instruction after writing is enabled
in the protect register?
Does not an interrupt generate between the instruction writing is enabled in the protect register and
the instruction writing in the SI/Oi (i=3,4) control register?
Does not instruction DMA transfer occur between the instruction writing is enabled in the protect
register and the instruction writing in the SI/Oi (i=3,4) control register starts?
Checks regarding the timer
Is the timer started after a value is set in the timer register?
Checks regarding Interrupt
When rewrite the interrupt register, do so at a point that does not generate the interruput request?
Checks regarding low voltage and low power consumption
When using at low voltage, have you checked recommended operating conditions and changed the
wait bit (address 000516, bit 7) to “1”?
Does the oscillator to which the count source is going to be switched be oscillating stably, before the
count source for BCLK can be changed from XIN to XCIN or vice versa?
In the low power consumption mode, does not current flow from Vref when the Vref connection bit (bit
5 in address 03D716) is set?
Is not voltage level of port floating in the low power consumption mode?
Checks regarding A-D converter
Have you selected other than fAD (no dividing) for øAD when using the A-D converter at VCC = 2.7V
to 4.0V?
Have you selected no sample & hold function when using the A-D converter at VCC = 2.7V to 4.0V?
Have you selected 8-bit mode when using the A-D converter at VCC = 2.7V to 4.0V?
Does øAD use it by less than 10MHZ?
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