HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 424

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

11.3 Operation
11.3.1 Overview
When corresponding bits in PADDR or PBDDR and NDERA or NDERB are set to 1, TPC output
is enabled. The TPC output initially consists of the corresponding PADR or PBDR contents.
When a compare-match event selected in TPCR occurs, the corresponding NDRA or NDRB bit
contents are transferred to PADR or PBDR to update the output values.
Figure 11-2 illustrates the TPC output operation. Table 11-3 summarizes the TPC operating
conditions.
Table 11-3 TPC Operating Conditions
NDER
0
1
Sequential output of up to 16-bit patterns is possible by writing new output data to NDRA and
NDRB before the next compare match. For information on non-overlapping operation, see
section 11.3.4, Non-Overlapping TPC Output.
TPC output pin
DDR
0
1
0
1
DDR
Q
Pin Function
Generic input port
Generic output port
Generic input port (but the DR bit is a read-only bit, and when compare
match occurs, the NDR bit value is transferred to the DR bit)
TPC pulse output
Figure 11-2 TPC Output Operation
Q
NDER
Q
DR
C
Output trigger signal
412
D
Q
NDR
D
Internal
data bus