HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 687

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

11.10
11.10.1 Module Stop Mode Setting
TPU operation can be disabled or enabled using the module stop control register. The initial
setting is for TPU operation to be halted. Register access is enabled by clearing module stop
mode. For details, refer to section 24, Power-Down Modes.
11.10.2 Input Clock Restrictions
The input clock pulse width must be at least 1.5 states in the case of single-edge detection, and at
least 2.5 states in the case of both-edge detection. The TPU will not operate properly with a
narrower pulse width.
In phase counting mode, the phase difference and overlap between the two input clocks must be at
least 1.5 states, and the pulse width must be at least 2.5 states. Figure 11.44 shows the input clock
conditions in phase counting mode.
Figure 11.44 Phase Difference, Overlap, and Pulse Width in Phase Counting Mode
TCLKA
(TCLKC)
TCLKB
(TCLKD)
Notes: Phase difference and overlap
Usage Notes
Pulse width
Overlap
Pulse width
Phase
rence
diffe-
Overlap
: 1.5 states or more
: 2.5 states or more
Phase
rence
diffe-
Pulse width
Rev.7.00 Mar. 18, 2009 page 619 of 1136
Section 11 16-Bit Timer Pulse Unit (TPU)
Pulse width
Pulse width
REJ09B0109-0700