DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 608
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: 608 of 776
- Download datasheet (5Mb)
(a) Flash Program/Erase Frequency Parameter (FPEFEQ: General Register ER0 of CPU)
FPEFEQ sets the operating frequency of the CPU. The settable range of the operating frequency in
this LSI is 5 to 20 MHz.
(b) Flash Pass/Fail Parameter (FPFR: General Register R0L of CPU)
FPFR indicates the return value of the initialization result.
Rev.2.00 May. 28, 2009 Page 568 of 732
REJ09B0059-0200
Bit
31 to 16 ⎯
15 to 0 F15 to F0 ⎯
Bit Name
Initial
Value
⎯
R/W
⎯
R/W
Description
Unused
These bits should be cleared to 0.
Frequency Set
Set the operating frequency of the CPU. With the PLL
multiplication function, set the frequency multiplied. The
setting value must be calculated as the following
methods.
•
•
For example, when the operating frequency of the CPU
is 20.000 MHz, the value is as follows.
•
•
The operating frequency which is shown in MHz units
must be rounded 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 FPEFEQ (general register
ER0).
The number to three decimal places of 20.000 is
rounded and the value is thus 20.00.
The formula that 20.00 × 100 = 2000 is converted to
the binary digit and B'0000, B'0111, B'1101, and
B'0000 (H'07D0) are set to ER0.
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