DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 376
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
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2437FV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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12.4
12.4.1
TCNT and TGR are 16-bit registers. As the data bus to the bus master is 16 bits wide, these
registers can be read from or written to in 16-bit units.
These registers cannot be read from or written to in 8-bit units; 16-bit access must always be used.
An example of 16-bit register access operation is shown in figure 12.2.
12.4.2
Registers other than TCNT and TGR are 8 bits. As the data bus to the bus master is 16 bits wide,
these registers can be read from or written to in 16-bit units. They can also be read from or written
to in 8-bit units.
Examples of 8-bit register access operation are shown in figures 12.3, 12.4, and 12.5.
Rev.2.00 May. 28, 2009 Page 336 of 732
REJ09B0059-0200
Bus
master
Figure 12.2 16-Bit Register Access Operation [Bus Master ↔ TCNT (16 Bits)]
16-Bit Registers
Interface to Bus Master
8-Bit Registers
Internal data bus
H
L
Bus interface
TCNTH
TCNTL
Module
data bus
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