DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 615
DF2437FV
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2437FV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 615 of 776
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20.4
When the pin is set in on-board programming mode and the reset start is executed, the on-board
programming state that can program/erase the on-chip flash memory is entered. On-board
programming mode has three operating modes: boot mode, user program mode, and user boot
mode.
For details on the pin setting for entering each mode, see table 20.5. For details on the state
transition of each mode for flash memory, see figure 20.2.
Table 20.5 Setting On-Board Programming Mode
Note:
20.4.1
Boot mode executes programming/erasing the user MAT and user boot MAT by the method for
transmitting control command and program data from the host using the on-chip SCI. The tool for
transmitting the control command and program data must be prepared in the host. SCI
communication mode is set to asynchronous mode. When a reset start is executed after this LSI’s
pin is set in boot mode, the boot program in the microcomputer is initiated. After the SCI bit rate
is automatically adjusted, the communication with the host is executed by means of the control
command method.
Bit
2, 1
0
Mode Setting
Boot mode
User program mode
User boot mode
* Before downloading the programming/erasing programs, the FLSHE bit must be set to
Bit Name
⎯
SF
On-Board Programming Mode
Boot Mode
1 to make a transition to user program mode.
Initial
Value
⎯
⎯
R/W
⎯
R/W
FWE
1
1*
1
Description
Unused
Return 0.
Success/Fail
Indicates whether the erasing processing is ended
normally or not.
0: Erasure is ended normally (no error)
1: Erasure is ended abnormally (error occurs)
MD2
0
1
1
Rev.2.00 May. 28, 2009 Page 575 of 732
MD1
0
1
0
REJ09B0059-0200
MD0
1
1
1
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