M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 303

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CHAPTER 7 16-BIT TIMER/EVENT COUNTER Q (TMQ)
(b) Batch write
In this mode, data is transferred all at once from the TQ0CCR0 to TQ0CCR3 registers to the CCR0 to
CCR3 buffer registers during timer operation. This data is transferred upon a match between the value of
the CCR0 buffer register and the value of the 16-bit counter. Transfer is enabled by writing to the
TQ0CCR1 register.
Whether to enable or disable the next transfer timing is controlled by writing or not writing to the TQ0CCR1
register.
In order for the setting value when the TQ0CCR0 to TQ0CCR3 registers are rewritten to become the 16-bit
counter comparison value (in other words, in order for this value to be transferred to the CCR0 to CCR3
buffer registers), it is necessary to rewrite TQ0CCR0 and finally write to the TQ0CCR1 register before the
16-bit counter value and the CCR0 buffer register value match. The values of the TQ0CCR0 to TQ0CCR3
registers are transferred to the CCR0 to CCR3 buffer registers upon a match between the count value of
the 16-bit counter and the value of the CCR0 buffer register. Thus, even when wishing only to rewrite the
value of the TQ0CCR0, TQ0CCR2, or TQ0CCR3 register, also write the same value (same as preset value
of the TQ0CCR1 register) to the TQ0CCR1 register.
Remark
TMQ1 cannot be set in a mode in which it can be rewritten by batch write.
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User’s Manual U16543EJ4V0UD