Renesas SH7641 User Manual
Page 40
Rev. 4.00 Sep. 14, 2005 Page xl of l
Section 25 Electrical Characteristics
Figure 25.1 Power-On Sequence ................................................................................................ 908
Figure 25.2 EXTAL Clock Input Timing ................................................................................... 917
Figure 25.3 CKIO Clock Input Timing ...................................................................................... 917
Figure 25.4 CKIO and CKIO2 Clock Input Timing ................................................................... 917
Figure 25.5 Oscillation Settling Timing (Power-On) ................................................................. 918
Figure 25.6 Phase Difference between CKIO and CKIO2 ......................................................... 918
Figure 25.7 Oscillation Settling Timing (Standby Mode Canceled by Reset)............................ 918
Figure 25.8 Oscillation Settling Timing (Standby Mode Canceled by
NMI or IRQ)................. 919
Figure 25.9 Reset Input Timing.................................................................................................. 921
Figure 25.10 Interrupt Input Timing........................................................................................... 921
Figure 25.11 Bus Release Timing .............................................................................................. 922
Figure 25.12 Pin Driving Timing in Standby Mode ................................................................... 922
Figure 25.13 Basic Bus Timing for Normal Space (No Wait).................................................... 925
Figure 25.14 Basic Bus Timing for Normal Space (Software 1 Wait) ....................................... 926
Figure 25.15 Basic Bus Timing for Normal Space (One Cycle of Externally Input/
WAITSEL
= 0) ..................................................................................................... 927
Figure 25.16 Basic Bus Timing for Normal Space (One Cycle of Externally Input/
WAITSEL
= 1) ..................................................................................................... 928
Figure 25.17 Basic Bus Timing for Normal Space (One Cycle of Software Wait,
External Wait Cycle Valid (WM Bit = 0), No Idle Cycle).................................... 929
Figure 25.18 MPX-IO Interface Bus Cycle (Three Address Cycles,
One Software Wait Cycle, One External Wait Cycle) .......................................... 930
Figure 25.19 Burst MPX-IO Interface Bus Cycle Single Read Write
(One Address Cycle, One Software Wait) ............................................................ 931
Figure 25.20 Byte-Selection SRAM Bus Cycle (SW = 1 Cycle, HW = 1 Cycle, One
Asynchronous External Wait Cycle, BAS = 0 (Write Cycle UB/LB Control)) .... 932
Figure 25.21 Byte-Selection SRAM Bus Cycle (SW = 1 Cycle, HW = 1 Cycle, One
Asynchronous External Wait Cycle, BAS = 1 (Write Cycle WE Control)).......... 933
Figure 25.22 Burst ROM Read Cycle (One Software Wait Cycle, One Asynchronous
External Burst Wait Cycle, Two Burst) ................................................................ 934
Figure 25.23 Synchronous DRAM Single Read Bus Cycle (Auto Precharge,
CAS Latency 2, WTRCD = 0 Cycle, WTRP = 0 Cycle) ...................................... 935
Figure 25.24 Synchronous DRAM Single Read Bus Cycle (Auto Precharge,
CAS Latency 2, WTRCD = 1 Cycle, WTRP = 1 Cycle) ...................................... 936
Figure 25.25 Synchronous DRAM Burst Read Bus Cycle (Four Read Cycles)
(Auto Precharge, CAS Latency 2, WTRCD = 0 Cycle, WTRP = 1 Cycle) .......... 937
Figure 25.26 Synchronous DRAM Burst Read Bus Cycle (Four Read Cycles)
(Auto Precharge, CAS Latency 2, WTRCD = 1 Cycle, WTRP = 0 Cycle) .......... 938