DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 630

• 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 difference between the programming procedures in user program mode and user boot mode is
whether the MAT is switched or not as shown in figure 20.14.
In user boot mode, the user boot MAT can be seen in the flash memory space with the user MAT
hidden in the background. The user MAT and user boot MAT are switched only while the user
MAT is being programmed. Because the user boot MAT is hidden while the user MAT is being
programmed, the procedure program must be located in an area other than flash memory. After
programming completes, switch the MATs again to return to the first state.
MAT switching is enabled by writing a specific value to FMATS. However, note that while the
MATs are being switched, the LSI is in an unstable state, e.g. access to a MAT is not allowed until
MAT switching is completed, and if an interrupt occurs, from which MAT the interrupt vector is
Rev.2.00 May. 28, 2009 Page 590 of 732
REJ09B0059-0200
Figure 20.14 Procedure for Programming User MAT in User Boot Mode
JSR FTDAR setting + 32
Select on-chip program
to be downloaded and
and bus master operation
destination by FTDAR
Set SCO to 1 and
execute download
Set FKEY to H'A5
specify download
procedure program
Clear FKEY to 0
Start programming
Set the FPEFEQ
Disable interrupts
Initialization
other than CPU
parameter
DPFR = 0 ?
FPFR = 0 ?
1
Yes
Yes
Initialization error processing
Download error processing
No
No
User-boot-MAT
selection state
Note:
No
*
The MAT must be switched by FMATS
to perform the programming error
processing in the user boot MAT.
JSR FTDAR setting + 16
Set FMATS to value other than
ER1 (FMPAR and FMPDR)
Set parameter to ER0 and
Set FMATS to H'AA to
select user boot MAT
H'AA to select user MAT
Set FKEY to H'5A
Clear FKEY to 0
procedure program
End programming
Programming
programming is
Required data
FPFR = 0 ?
completed?
1
Yes
Yes
Clear FKEY and programming
No
error processing*
switchover
switchover
MAT
MAT