HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 235
HD6435348R
Manufacturer Part Number
HD6435348R
Description
Single-Chip Microcomputer
Manufacturer
Hitachi Semiconductor
Datasheet
1.HD6435348R.pdf
(487 pages)
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Bit 7
CMFB
0
1
Bit 6—Compare-Match Flag A (CMFA): This status flag is set to 1 when the timer count
matches the time constant set in TCORA.
Bit 6
CMFA
0
1
Bit 5—Timer Overflow Flag (OVF): This status flag is set to 1 when the timer count overflows
(changes from H'FF to H'00).
Bit 5
OVF
0
1
Bit 4—Reserved: This bit cannot be modified and is always read as 1.
Bits 3 to 0—Output Select 3 to 0 (OS3 to OS0): These bits specify the effect of compare-match
events on the timer output signal (TMO). Bits OS3 and OS2 control the effect of compare-match B
on the output level. Bits OS1 and OS0 control the effect of compare-match A on the output level.
When all four output select bits are cleared to 0 the TMO signal is not output. The TMO output is
0 before the first compare-match.
Bit 3
OS3
0
0
1
1
Description
This bit is cleared from 1 to 0 when:
1. The CPU reads the CMFB bit after it has been set to 1, then writes a 0 in this bit.
2. Compare-match interrupt B is served by the data transfer controller (DTC).
This bit is set to 1 when TCNT = TCORB.
Description
This bit is cleared from 1 to 0 when:
1. The CPU reads the CMFA bit after it has been set to 1, then writes a 0 in this bit.
2. Compare-match interrupt A is served by the data transfer controller (DTC).
This bit is set to 1 when TCNT = TCORA.
Description
This bit is cleared from 1 to 0 when the CPU reads (Initial value)
the OVF bit after it has been set to 1, then writes a 0 in this bit.
This bit is set to 1 when TCNT changes from H'FF to H'00.
Bit 2
OS2
0
1
0
1
Description
No change when compare-match B occurs.
Output changes to 0 when compare-match B occurs.
Output changes to 1 when compare-match B occurs.
Output inverts (toggles) when compare-match B occurs.
219
(Initial value)
(Initial value)
(Initial value)
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