DF2345TE20 Renesas Electronics America, DF2345TE20 Datasheet - Page 604

MCU 5V 128K 100-TQFP

DF2345TE20

Manufacturer Part Number
DF2345TE20
Description
MCU 5V 128K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheet

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DF2345TE20V
Manufacturer:
Renesas
Quantity:
222
Part Number:
DF2345TE20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Section 17 ROM
The flash memory itself cannot be read while the SWE bit is set to 1 to perform programming or
erasing, so the control program that performs programming and erasing should be run in on-chip
RAM or external memory.
Figure 17.19 shows the procedure for executing the program/erase control program when
transferred to on-chip RAM.
Rev. 4.00 Feb 15, 2006 page 578 of 900
REJ09B0291-0400
Notes: Do not apply a constant high level to the FWE pin. Apply a high level to the FWE pin
only when the flash memory is programmed or erased. Also, while a high level is
applied to the FWE pin, the watchdog timer should be activated to prevent
overprogramming or overerasing due to program runaway, etc.
* For further information on FWE application and disconnection, see section 17.14,
Flash Memory Programming and Erasing Precautions.
Figure 17.19 User Program Mode Execution Procedure
Write the FWE assessment program
and transfer program (and the program/
erase control program if necessary) to
flash memory beforehand
Branch to flash memory application
program (flash memory rewriting)
Branch to program/erase control
Transfer program/erase control
Execute program/erase control
(Enter user program mode)
(Clear user program mode)
MD
program in RAM area
2
, MD
program to RAM
FWE = high *
Clear FWE *
Reset-start
1
program
, MD
0
= 110, 111

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