HD64F2145 Datasheet, PDF (618/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

 Boot mode
 User program mode
On-board programming/erasing can be done in boot mode in which the boot program built into
the chip is started for erase or programming of the entire flash memory. In user program mode,
individual blocks can be erased or programmed.
• Automatic bit rate adjustment
With data transfer in boot mode, this LSI's bit rate can be automatically adjusted to match the
transfer bit rate of the host.
• Programming/erasing protection
Sets protection against flash memory programming/erasing via hardware, software, or error
protection.
• Programmer mode
In addition to on-board programming mode, programmer mode is supported to program or
erase the flash memory using a PROM programmer.
Internal address bus
Internal data bus (16 bits)
FLMCR1
FLMCR2
EBR1
EBR2
Bus interface/controller
Operating
mode
Mode pin
Flash memory
(64/128/256 kbytes)
Legend
FLMCR1
FLMCR2
EBR1
EBR2
: Flash memory control register 1
: Flash memory control register 2
: Erase block register 1
: Erase block register 2
Figure 23.1 Block Diagram of Flash Memory
Rev. 2.0, 08/02, page 578 of 788