3851 Group (Built-in 24 KB or more ROM)
GROUP EXPANSION
Renesas plans to expand the 3851 group (built-in 24 KB or more
ROM) as follows.
Memory Type
Support for mask ROM, One Time PROM, and flash memory ver-
sions.
Memory Size
Flash memory size ......................................................... 32 K bytes
Mask ROM size ................................................. 24 K to 32 K bytes
One Time PROM size ..................................................... 24 K bytes
RAM size ............................................................... 640 to 1 K bytes
Packages
42P4B ......................................... 42-pin shrink plastic-molded DIP
42P2R-A/E ......................................... 42-pin plastic-molded SSOP
42S1B-A .................. 42-pin shrink ceramic DIP (EPROM version)
Memory Expansion Plan
ROM size (bytes)
ROM
exteranal
32K
Mass production
M38517M8/F8
28K
Mass production
24K
M38514M6/E6
20K
16K
12K
8K
384 512 640 768 896 1024 1152 1280 1408 1536 2048
RAM size (bytes)
Products under development or planning: the development schedule and specification may be revised without notice.
The development of planning products may be stopped.
Fig. 4 Memory expansion plan
Rev.1.01 Oct 15, 2003 page 5 of 89