h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 465

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

This LSI has an on-chip ROM (flash memory). The features of the flash memory are summarized
below.
A block diagram of the flash memory is shown in figure 18.1.
18.1
• Size
• Programming/erase methods
• Programming/erase time
• Reprogramming capability
• Two flash memory on-board programming modes
• Automatic bit rate adjustment
• Programming/erasing protection
ROMF360A_010020040200
Product Classification
H8S/2111B
The flash memory is programmed 128 bytes at a time. Erase is performed in single-block units.
The flash memory is configured as follows:
 8 Kbytes × 2 blocks, 16 Kbytes × 1 block, 28 Kbytes × 1 block, and 1 Kbyte × 4 blocks
To erase the entire flash memory, each block must be erased in turn.
It takes 10 ms (typ.) to program the flash memory 128 bytes at a time; 80 µs (typ.) per 1 byte.
Erasing one block takes 100 ms (typ.).
The flash memory can be reprogrammed up to 100 times.
 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.
With data transfer in boot mode, this LSI's bit rate can be automatically adjusted to match the
transfer bit rate of the host.
Sets protection against flash memory programming/erasing via hardware, software, or error
protection.
Features
ROM Capacitance
64 Kbytes
Section 18 ROM
ROM Address
H'000000 to H'00FFFF (mode 2)
H'0000 to H'DFFF (mode 3)
Rev. 1.00, 05/04, page 431 of 544