Block Diagram - Hitachi H8/3062 Hardware Manual

Single-chip microcomputer

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Block Diagram

Figure 17.1 shows a block diagram of the flash memory.

FLMCR: Flash memory control register*

EBR: Erase block register*

RAMCR: RAM control register*

FLMSR: Flash memory status register*

Notes: 1. Functions as the FWE pin in the versions with on-chip flash memory, and as the RESO

pin in the versions with on-chip mask ROM.

2. The registers that control the flash memory (FLMCR, EBR, RAMCR, and FLMSR) are

used only in the versions with on-chip flash memory. They are not provided in the

versions with on-chip mask ROM. Reading the corresponding addresses in a mask

ROM version will always return 1s, and writes to these addresses are disabled.

Internal data bus (upper 8 bits)

Internal data bus (lower 8 bits)

Bus interface/controller

On-chip Flash memory

even address odd address

Figure 17.1 Block Diagram of Flash Memory

(128 kbytes)