DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 626

• 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: -

(3) Erasing Procedure in User Program Mode
The procedures for download, initialization, and erasing are shown in figure 20.12.
The procedure program must be executed in an area other than the user MAT to be erased.
Especially the part where the SCO bit in FCCS is set to 1 for downloading must be executed in the
on-chip RAM.
The area that can be executed in each step of the user procedure program (on-chip RAM, user
MAT, and external space) is shown in section 20.4.4, Storable Area for Procedure Program and
Program Data.
For the area of the on-chip program to be downloaded, see the RAM map for
programming/erasing in figure 20.10.
Rev.2.00 May. 28, 2009 Page 586 of 732
REJ09B0059-0200
JSR FTDAR setting + 32
Select on-chip program
to be downloaded and
destination by FTDAR
Start erasing procedure
Set SCO to 1 and
specify download
execute download
Set FKEY to H'A5
Set the FPEFEQ
Clear FKEY to 0
Initialization
FPFR = 0 ?
DPFR
parameter
program
1
Yes
Yes
=
0?
Initialization error processing
Download error processing
No
No
1.
Figure 20.12 Erasing Procedure
No
JSR FTDAR setting + 16
Disable interrupts and
bus master operation
Set FEBS parameter
procedure program
Set FKEY to H'5A
Clear FKEY to 0
other than CPU
Required block
End erasing
FPFR = 0 ?
completed?
erasing is
Erasing
1
Yes
Yes
Clear FKEY and erasing
No
error processing
2.
3.
4.
5.
6.