HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 571

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 16 ROM
Section 16 ROM
16.1
Overview
The H8S/2246 and H8S/2245 have 128 kbytes of on-chip ROM (PROM or mask ROM). The
H8S/2244 and H8S/2243 have 64 kbytes of on-chip ROM (mask ROM). The H8S/2242 and
H8S/2241 have 32 kbytes of on-chip ROM (mask ROM). The ROM is connected to the CPU by a
16-bit data bus. The CPU accesses both byte data and word data in one state, making possible
rapid instruction fetches and high-speed processing.
The on-chip ROM is enabled or disabled by setting the mode pins (MD
, MD
, and MD
) and bit
2
1
0
EAE in BCRL.
The PROM version of the H8S/2245 Group (H8S/2246) can be programmed with a general-
purpose PROM programmer, by setting PROM mode.
Rev.3.00 Mar. 26, 2007 Page 529 of 772
REJ09B0355-0300