DF2345TE20 Renesas Electronics America, DF2345TE20 Datasheet - Page 584
DF2345TE20
Manufacturer Part Number
DF2345TE20
Description
MCU 5V 128K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheet
1.DF2345TE20V.pdf
(929 pages)
Specifications of DF2345TE20
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
71
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F2345TE20
HD64F2345TE20
HD64F2345TE20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2345TE20V
Manufacturer:
Renesas
Quantity:
222
Company:
Part Number:
DF2345TE20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 17 ROM
On-Board Programming Modes
Rev. 4.00 Feb 15, 2006 page 558 of 900
REJ09B0291-0400
Boot mode
1. Initial state
3. Flash memory initialization
H8S/2345 F-ZTAT chip
H8S/2345 F-ZTAT chip
The old program version or data remains written
in the flash memory. The user should prepare the
programming control program and new
application program beforehand in the host.
The erase program in the boot program area (in
RAM) is executed, and the flash memory is
initialized (to H'FF). In boot mode, entire flash
memory erasure is performed, without regard to
blocks.
Application program
Flash memory
Flash memory
Flash memory
Boot program
Boot program
(old version)
erase
Programming control
New application
New application
program
program
program
Host
Host
Boot program area
Programming control
program
RAM
RAM
SCI
SCI
Figure 17.9 Boot Mode
2. Programming control program transfer
4. Writing new application program
H8S/2345 F-ZTAT chip
H8S/2345 F-ZTAT chip
When boot mode is entered, the boot program in
the H8S/2345 chip (originally incorporated in the
chip) is started and the programming control
program in the host is transferred to RAM via SCI
communication. The boot program required for
flash memory erasing is automatically transferred
to the RAM boot program area.
The programming control program transferred
from the host to RAM is executed, and the new
application program in the host is written into the
flash memory.
Application program
New application
Flash memory
Flash memory
Boot program
Boot program
(old version)
program
New application
program
Host
Host
Boot program area
Boot program area
Programming control
Programming control
Program execution state
program
program
RAM
RAM
SCI
SCI
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