HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 605

• Manufacturer Part Number: HD64F7050
• Description: 32-Bit RISC Microcomputer SuperH RISC engine Family/
• Manufacturer: RENESAS [Renesas Technology Corp]

19.1
The SH7051 has 256 kbytes of on-chip flash memory. The features of the flash memory are
summarized below.
Four flash memory operating modes
Programming/erase methods
The flash memory is programmed 32 bytes at a time. Block erase (in single-block units) can be
performed. Block erasing can be performed as required on 1 kB, 28 kB, and 32 kB blocks.
Programming/erase times
The flash memory programming time is 10 ms (typ.) for simultaneous 32-byte programming,
equivalent to 300 µs (typ.) per byte, and the erase time is 100 ms (typ.).
Reprogramming capability
The flash memory can be reprogrammed up to 100 times.
On-board programming modes
There are two modes in which flash memory can be programmed/erased/verified on-board:
Automatic bit rate adjustment
With data transfer in boot mode, the SH7050’s bit rate can be automatically adjusted to match
the transfer bit rate of the host.
Flash memory emulation in RAM
Flash memory programming can be emulated in real time by overlapping a part of RAM onto
flash memory.
Protect modes
There are two protect modes, hardware and software, which allow protected status to be
designated for flash memory program/erase/verify operations
Programmer mode
Flash memory can be programmed/erased in programmer mode, using a PROM programmer,
as well as in on-board programming mode.
Program mode
Erase mode
Program-verify mode
Erase-verify mode
Boot mode
User program mode
Features
Section 19 ROM (256 kB Version)
Rev. 5.00 Jan 06, 2006 page 585 of 818
Section 19 ROM (256 kB Version)
REJ09B0273-0500