18.2.2
Socket Adapter Pin Assignments and Memory Map
The H8/3337Y and H8/3334Y can be programmed with a general-purpose PROM programmer by
using a socket adapter to change the pin-out to 32 pins. See table 18.3. The same socket adapter
can be used for both the H8/3337Y and H8/3334Y. Figure 18.2 shows the socket adapter pin
assignments.
Table 18.3 Socket Adapter
Package
Socket Adapter
HS3337ESHS1H
HS3337ESNS1H
HS3337ESCS1H
HS3337ESGS1H
80-pin QFP
80-pin TQFP
84-pin PLCC
84-pin windowed LCC
The PROM size is 60 kbytes for the H8/3337Y and 32 kbytes for the H8/3334Y. Figures 18.3 and
18.4 show memory maps of the H8/3337Y and H8/3334Y in writer mode. H'FF data should be
specified for unused address areas in the on-chip PROM.
When programming with a PROM programmer, limit the program address range to H'0000 to
H'F77F for the H8/3337Y and H'0000 to H'7FFF for the H8/3334Y. Specify H'FF data for
addresses H'F780 and above (H8/3337Y) or H'8000 and above (H8/3334Y). If these addresses are
programmed by mistake, it may become impossible to program or verify the PROM data. The
same problem may occur if an attempt is made to program the chip in page programming mode.
Note that the PROM versions are one-time programmable (OTP) microcomputers, packaged in
plastic packages, and cannot be reprogrammed.
363
RENESAS [ RENESAS TECHNOLOGY CORP ]
