h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 783

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

22.5
22.5.1
Module stop mode can be set for individual on-chip supporting modules.
When the corresponding MSTP bit in MSTPCR is set to 1, module operation stops at the end of
the bus cycle and a transition is made to module stop mode. The CPU continues operating
independently.
Table 22.4 shows MSTP bits and the corresponding on-chip supporting modules.
When the corresponding MSTP bit is cleared to 0, module stop mode is cleared and the module
starts operating at the end of the bus cycle. In module stop mode, the internal states of modules
other than the SCI, Motor control PWM, A/D converter and HCAN are retained.
After reset clearance, all modules other than DTC are in module stop mode.
When an on-chip supporting module is in module stop mode, read/write access to its registers is
disabled.
Table 22.4 MSTP Bits and Corresponding On-Chip Supporting Modules
Note: Unlisted bits of the registers are reserved.
Register
MSTPCRA
MSTPCRB
MSTPCRC
MSTPCRD
The write value must always be 1.
Module Stop Mode
Module Stop Mode
Bit
MSTPA6
MSTPA5
MSTPA3
MSTPA1
MSTPB7
MSTPB6
MSTPB5
MSTPC4
MSTPC3
MSTPD7
MSTPD6
Module
Data transfer controller (DTC)
16-bit timer pulse unit (TPU)
Programmable pulse generator (PPG)
A/D converter
Serial communication interface 0 (SCI0)
Serial communication interface 1 (SCI1)
Serial communication interface 2 (SCI2)
(H8S/2648, H8S/2648R, H8S/2647)
PC break controller (PBC)
Controller area network (HCAN)
Motor control PWM (PWM)
LCD controller/driver
Rev. 5.00 Sep 22, 2005 page 757 of 1136
Section 22 Power-Down Modes
REJ09B0257-0500