HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 381

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Examples of Buffering: Figure 10-49 shows an example in which GRA is set to function as an
output compare register buffered by BRA, TCNT is set to operate as a periodic counter cleared by
GRB compare match, and TIOCA and TIOCB are set to toggle at compare match A and B.
Because of the buffer setting, when TIOCA toggles at compare match A, the BRA value is
simultaneously transferred to GRA. This operation is repeated each time compare match A occurs.
Figure 10-50 shows the transfer timing.
GRB
H'0250
H'0200
H'0100
H'0000
BRA
GRA
TIOCB
TIOCA
Figure 10-49 Register Buffering (Example 1: Buffering of Output Compare Register)
TCNT value
H'0200
H'0250
H'0200
H'0100
Counter cleared by compare match B
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Compare match A
H'0100
H'0200
H'0200
Time
Toggle
output
Toggle
output