DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 592

• 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: -

20.1.2
The comparison table of programming and erasing related items about boot mode, user program
mode, user boot mode, and programmer mode is shown in table 20.1.
Table 20.1 Comparison of Programming Modes
Notes: 1. All-erasure is performed. After that, the specified block can be erased.
• The user boot MAT can be programmed or erased only in boot mode and programmer mode.
• The user MAT and user boot MAT are erased in boot mode. Then, the user MAT and user boot
• The boot operation of any interface can be performed by the mode pin setting different from
Rev.2.00 May. 28, 2009 Page 552 of 732
REJ09B0059-0200
Programming/
erasing
environment
Programming/
erasing enable
MAT
All erasure
Block division
erasure
Program data
transfer
Reset initiation
MAT
Transition to user
mode
MAT can be programmed by means of the command method. However, the contents of the
MAT cannot be read until this state.
Only user boot MAT is programmed and the user MAT is programmed in user boot mode or
only user MAT is programmed because user boot mode is not used.
user program mode in user boot mode.
2. Firstly, the reset vector is fetched from the embedded program storage MAT. After the
Mode Comparison
flash memory related registers are checked, the reset vector is fetched from the user
boot MAT.
Boot mode
On-board
User MAT
User boot MAT
From host via SCI Via any device
Embedded
program storage
MAT
Changing mode
setting and reset
(Automatic)
*
1
User program
mode
On-board
User MAT
User MAT
Changing FLSHE
bit and FWE pin
User boot mode
On-board
User MAT
Via any device
User boot MAT*
Changing mode
setting and reset
2
Programmer
mode
PROM
programmer
User MAT
User boot MAT
×
Via programmer
⎯
⎯
(Automatic)