DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 605

• 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: -

Section 20 Flash Memory (0.18-μm F-ZTAT Version)
20.3.2
Programming/Erasing Interface Parameters
The programming/erasing interface parameters specify the operating frequency, storage place for
program data, programming destination address, and erase block and exchange the processing
result for the downloaded on-chip program. These parameters use the general registers of the CPU
(ER0 and ER1) or the on-chip RAM area. The initial value is undefined by a reset or in hardware
standby mode.
When download, initialization, or on-chip program is executed, registers of the CPU except for
R0L are stored. The return value of the processing result is written to R0L. Since the stack area is
used for storing the registers except for R0L, the stack area must be saved at the processing start.
(A maximum size of stack area to be used is 128 bytes.)
The programming/erasing interface parameters are used in the following four items.
1. Download control
2. Initialization before programming or erasing
3. Programming
4. Erasing
These items use different parameters. The correspondence table is shown in table 20.4.
A result of initialization, programming, or erasure processing is returned to the FPFR parameters.
However, the meaning of bits in FPFR varies in each processing. For details, see descriptions of
FPFR for each processing.
Rev.2.00 May. 28, 2009 Page 565 of 732
REJ09B0059-0200