DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 646

• 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: -

5. Memory sizes of the user MAT and user boot MAT are different. When accessing the user
Rev.2.00 May. 28, 2009 Page 606 of 732
REJ09B0059-0200
boot MAT, do not access addresses above the top of its 8-kbyte memory space. If an access is
made beyond the 8-kbyte space, the undefined value will be read.
<User
Figure 20.17 Switching between User MAT and User Boot MAT
MAT>
Procedure for switching to the user boot MAT
(1) Mask interrupts
(2) Write H'AA to FMATS.
(3) Execute four NOP instructions before
Procedure for switching to the user MAT
(1) Mask interrupts
(2) Write a value other than H'AA to FMATS.
(3) Execute four NOP instructions before accessing
accessing the user boot MAT.
the user MAT.
<On-chip RAM>
switching to the
Procedure for
user boot MAT
the user MAT
Procedure for
switching to
<User boot MAT>