DF2552BR26DV Renesas Electronics America, DF2552BR26DV Datasheet - Page 735
DF2552BR26DV
Manufacturer Part Number
DF2552BR26DV
Description
IC H8S/2552 MCU FLASH 176-LFBGA
Manufacturer
Renesas Electronics America
Series
H8® H8S/2500r
Specifications of DF2552BR26DV
Core Processor
H8S/2000
Core Size
16-Bit
Speed
26MHz
Connectivity
I²C, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
104
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 16x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
176-LFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2552BR26DV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 735 of 980
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(2)
The on-chip programming/erasing program to be downloaded includes the initialization program.
The specified period pulse must be applied when programming or erasing. The specified pulse
width is made by the method in which wait loop is configured by the CPU instruction. The
operating frequency of the CPU must be set.
The initial program is set as a parameter of the programming/erasing program which has
downloaded these settings.
(a) Flash programming/erasing frequency parameter (FPEFEQ: General register ER0 of CPU)
This parameter sets the operating frequency of the CPU.
For the settable range of operating frequency in this LSI, see section 24.4.2, Clock Timing.
Bit
31 to 16 F31 to F16 ⎯
15 to 0 F15 to F0
Programming/Erasing Initialization
Bit Name
Initial
Value
⎯
R/W
R/W
R/W
Description
Reserved
These bit should be cleared to 0.
Frequency Set
Set the operating frequency of the CPU. The setting
value must be calculated as the following methods.
•
•
For example, when the operating frequency of the CPU is
25.000 MHz, the value is as follows.
•
•
The operating frequency which is shown in MHz units
must be rounded in a number to three decimal places
and be shown in a number of two decimal places.
The value multiplied by 100 is converted to the binary
digit and is written to the FPEFEQ parameter (general
register ER0).
The number to three decimal places of 25.000 is
rounded and the value is thus 25.00.
The formula that 25.00 × 100 = 2500 is converted to
the binary digit and B'0000,1001,1100,0100 (H'09C4)
is set to ER0.
Rev. 6.00 Sep. 24, 2009 Page 687 of 928
Section 20 Flash Memory
REJ09B0099-0600
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