SH7751 Datasheet, PDF(362/1224 Page) Renesas Technology Corp – 32-Bit RISC Microcomputer

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

SH7751 Datasheet, PDF (362/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

◁

9. Power-Down Modes

VDD-RTC

CA

Power-on oscillation

settling time

VDD, VDDQ*

RESET

Min 0s

9.10

Note: * VDD, VDD-PLL1/2, VDDQ, VDD-CPG

Figure 9.15 Timing When VDD-RTC Power Is Off â On

Usage Notes

9.10.1 Note on Current Consumption

After a power-on reset, the current consumption may exceed the maximum value for sleep mode

or standby mode during the period until one or more of the arithmetic operation or floating-point

operation instructions listed below is executed.

1. Arithmetic operation instructions

MAC.W, MAC.L

2. Floating-point operation instructions

â¯ When FPSCR.PR = 0

FADD, FSUB, FMUL, FMAC, FLOAT, FTRC, FDIV, FSQRT, FIPR, FTRV

â¯ When FPSCR.PR = 1

FADD, FSUB, FMUL, FLOAT, FTRC, FDIV, FSQRT, FCNVSD, FCNVDS

Workaround: After a power-on reset, execute one or more of the above instructions before

transitioning to sleep mode or standby mode.

Rev.4.00 Oct. 10, 2008 Page 264 of 1122

REJ09B0370-0400

▷