HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 591

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Figures 22.10 and 22.11 show examples of pin timing in hardware standby mode.
The CA pin is sampled using EXTAL2 (32.768 kHz), and a hardware standby request is only
recognized when the pin is low for two consecutive clock cycles.
The CA pin must be held low while the chip is in hardware standby mode.
Clock oscillation starts when the CA pin is driven high after the RESETP pin is driven low.
CKIO
CA
STATUS
Notes:
Hardware Standby Mode Timing
1.
2.
3.
4.
5.
Reset:
Standby:
Normal:
Bcyc:
Rcyc:
2 Rcyc or more*
HH (STATUS1 high, STATUS0 high)
LH (STATUS1 low, STATUS0 high)
LL (STATUS1 low, STATUS0 low)
Bus clock cycle
EXTAL2 (32.768 kHz) cycle
Normal*
(When CA Goes Low in Normal Operation)
Figure 22.10 Hardware Standby Mode
3
5
Standby*
2
0 to 10Bcyc*
Undefined
Rev. 4.00, 03/04, page 545 of 660
4
Reset*
0 to 30Bcyc*
1
4
Normal*
3