HD6433044 Datasheet, PDF (418/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

11.2.8 Next Data Enable Register B (NDERB)
NDERB is an 8-bit readable/writable register that enables or disables TPC output groups 3 and 2
(TP₁₅ to TP₈) on a bit-by-bit basis.
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
NDER15 NDER14 NDER13 NDER12 NDER11 NDER10 NDER9 NDER8
0
0
0
0
0
0
0
0
R/W
R/W R/W
R/W R/W R/W
R/W R/W
Next data enable 15 to 8
These bits enable or disable
TPC output groups 3 and 2
If a bit is enabled for TPC output by NDERB, then when the ITU compare match event selected in
the TPC output control register (TPCR) occurs, the NDRB value is automatically transferred to
the corresponding PBDR bit, updating the output value. If TPC output is disabled, the bit value is
not transferred from NDRB to PBDR and the output value does not change.
NDERB is initialized to H'00 by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Bits 7 to 0—Next Data Enable 15 to 8 (NDER15 to NDER8): These bits enable or disable TPC
output groups 3 and 2 (TP₁₅ to TP₈) on a bit-by-bit basis.
Bits 7 to 0
NDER15 to NDER8
0
1
Description
TPC outputs TP₁₅ to TP₈ are disabled
(NDR15 to NDR8 are not transferred to PB₇ to PB₀)
TPC outputs TP₁₅ to TP₈ are enabled
(NDR15 to NDR8 are transferred to PB₇ to PB₀)
(Initial value)
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