HD6417616 RENESAS [Renesas Technology Corp], HD6417616 Datasheet - Page 838

• Manufacturer Part Number: HD6417616
• Description: 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 21 Power-Down Modes
21.5
21.5.1
By setting one of bits MSTP11–MSTP3, MSTP1 to 1 in standby control register 1 or 2, the supply
of the clock to the corresponding on-chip peripheral module or DSP unit can be halted. This
function can be used to reduce the power consumption. Do not perform read/write operations for a
module in module standby mode.
With the module standby function, the external pins of the DMAC and SIO0–SIO2 on-chip
peripheral modules retain their states prior to halting, as do DMAC, DSP, and SIO0–SIO2
registers. The external pins of the FRT, SCIF1–2, and TPU are reset and all their registers are
initialized.
An on-chip peripheral module corresponding to a module standby bit must not be switched to the
module standby state while it is running. Also, interrupts from a module placed in the module stop
state should be disabled.
21.5.2
Clear the module standby function by clearing the MSTP11–MSTP3, MSTP1 bits, or by a power-
on reset or manual reset.
Rev. 2.00 Mar 09, 2006 page 812 of 906
REJ09B0292-0200
Transition to Module Standby Function
Clearing the Module Standby Function
Module Standby Function