DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 589

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

The flash memory has the following features. Figure 20.1 shows a block diagram of the flash
memory.
20.1
• Size
• Two flash-memory MATs according to LSI initiation mode
• Programming/erasing interface by the download of on-chip program
• Programming/erasing time
• Number of programming
• Three on-board programming modes
ROM1250A_000020021100
Product Classification
H8S/2437
The on-chip flash memory has two memory spaces in the same address space (hereafter
referred to as memory MATs). The mode setting in the initiation determines which memory
MAT is initiated first. The MAT can be switched by using the bank-switching method after
initiation.
The user memory MAT is initiated at a power-on reset in user mode: 256 kbytes
The user boot memory MAT is initiated at a power-on reset in user boot mode: 8 kbytes
This LSI has a dedicated programming/erasing program. After downloading this program to
the on-chip RAM, programming/erasing can be performed by setting the argument parameter.
The flash memory programming time is 3 ms (typ.) in 128-byte simultaneous programming
and approximately 25 μs per byte. The erasing time is 1000 ms (typ.) per 64-kbyte block.
The number of flash memory programming can be up to 100 times at the minimum. (The value
ranged from 1 to 100 is guaranteed.)
Boot mode:
This mode is a program mode that uses an on-chip SCI interface. The user MAT and user boot
MAT can be programmed. This mode can automatically adjust the bit rate between the host
and this LSI.
User program mode:
The user MAT can be programmed by using any interface.
User boot mode:
The user boot program of any interface can be created and the user MAT can be programmed.
Section 20 Flash Memory (0.18-μm F-ZTAT Version)
Features
HD64F2437
ROM Size
256 kbytes
ROM Address
H'000000 to H'03FFFF
Rev.2.00 May. 28, 2009 Page 549 of 732
REJ09B0059-0200