Datasheet

Rev. 6.00 Mar. 18, 2010 Page l of lx
REJ09B0054-0600
Section 22 PROM
Figure 22.1 HD6472237 Socket Adapter Pin Correspondence Diagram
(FP-100B, TFP-100B, TFP-100G).......................................................................756
Figure 22.2 HD6472237 Socket Adapter Pin Correspondence Diagram (FP-100A)..............757
Figure 22.3 Memory Map in PROM Mode.............................................................................758
Figure 22.4 High-Speed Programming Flowchart...................................................................760
Figure 22.5 PROM Programming/Verification Timing ..........................................................763
Figure 22.6 Recommended Screening Procedure....................................................................764
Section 23 Clock Pulse Generator
Figure 23.1 Block Diagram of Clock Pulse Generator............................................................765
Figure 23.2 Connection of Crystal Resonator (Example)........................................................770
Figure 23.3 Crystal Resonator Equivalent Circuit...................................................................771
Figure 23.4 External Clock Input (Examples).........................................................................772
Figure 23.5 External Clock Input Timing................................................................................777
Figure 23.6 External Clock Switching Circuit (Example).......................................................778
Figure 23.7 External Clock Switching Timing (Example)......................................................778
Figure 23.8 Connection Example of 32.768-kHz Quartz Oscillator........................................780
Figure 23.9 Equivalence Circuit for 32.768-kHz Oscillator....................................................780
Figure 23.10 Pin Handling when Subclock Not Required.........................................................781
Figure 23.11 Note on Board Design of Oscillator Circuit.........................................................782
Section 24 Power-Down Modes
Figure 24.1 Mode Transition Diagram....................................................................................785
Figure 24.2 Medium-Speed Mode Transition and Clearance Timing.....................................791
Figure 24.3 Software Standby Mode Application Example....................................................794
Figure 24.4 Hardware Standby Mode Timing.........................................................................796
Section 25 Power Supply Circuit
Figure 25.1 Power Supply Connection for H8S/2258 Group, H8S/2238B, and H8S/2236B
(On-Chip Internal Power Supply Step-Down Circuit).........................................804
Figure 25.2 Power Supply Connection for H8S/2239 Group, H8S/2238R, H8S/2236R,
H8S/2237 Group, and H8S/2227 Group (No Internal Power Supply Step-Down
Circuit).................................................................................................................804
Section 27 Electrical Characteristics
Figure 27.1 Power Supply Voltage and Operating Ranges (H8S/2258 Group) ......................839
Figure 27.2 Power Supply Voltage and Operating Ranges (H8S/2239 Group) ......................840
Figure 27.3 Power Supply Voltage and Operating Ranges (H8S/2238B and H8S/2236B) ....841
Figure 27.4 Power Supply Voltage and Operating Ranges (H8S/2238R and H8S/2236R) ....842