DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 457
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: 457 of 776
- Download datasheet (5Mb)
This LSI has an on-chip duty measurement circuit which consists of an edge detection circuit,
8-bit counter, and capture register. This circuit can measure the duty by detecting edges of an
external event signal and capturing the high-level period and cycle.
Figure 14.1 shows a block diagram of the duty measurement circuit.
14.1
• Selection of a counter operating signal from eight operating clocks
• Automatic duty measurement of eight external event signals for two systems
• Two interrupt sources
TIM8FR1A_010020020700
One of the eight operating clocks (φ, φ/2, φ/4, φ/8, φ/32, φ/2048, φ/32768, or φ/65536) can be
selected.
Using an edge detection circuit enables both edges of the external event signal to be detected
and capturing the counter value enables the duty to be measured. One of eight external event
signals (2-system HSYNC, 2-system CSYNC, 2-system VSYNC, HFBACK, or VFBACK)
can be selected.
There are two interrupt sources: Duty measurement end and overflow.
Features
Section 14 Duty Measurement Circuit
Rev.2.00 May. 28, 2009 Page 417 of 732
REJ09B0059-0200
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