HD6473847RHV Datasheet, PDF (173/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Address
Data
VPP
VPP
VCC
Write
tAS
Input data
tDS
tDH
tVPS
VCC
VCC+1
VCC
tVCS
tCES
Verify
Section 6 ROM
tAH
Output data
tDF
tPW
tOES
tOE
tOPW*
Note: * tOPW is defined by the value shown in figure 6.4, High-Speed, High-Reliability Programming Flowchart.
Figure 6.5 PROM Write/Verify Timing
6.3.2 Programming Precautions
• Use the specified programming voltage and timing.
The programming voltage in PROM mode (Vpp) is 12.5 V. Use of a higher voltage can
permanently damage the chip. Be especially careful with respect to PROM programmer
overshoot.
Setting the PROM programmer to Renesas specifications for the HN27C101 will result in
correct Vpp of 12.5 V.
• Make sure the index marks on the PROM programmer socket, socket adapter, and chip are
properly aligned. If they are not, the chip may be destroyed by excessive current flow. Before
programming, be sure that the chip is properly mounted in the PROM programmer.
• Avoid touching the socket adapter or chip while programming, since this may cause contact
faults and write errors.
Rev. 7.00 Mar. 08, 2010 Page 141 of 510
REJ09B0024-0700