DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 384
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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12.5.2
In synchronous operation, the values in a number of TCNT counters can be rewritten
simultaneously (synchronous presetting). Also, a number of TCNT counters can be cleared
simultaneously by making the appropriate setting in TCR (synchronous clearing). Synchronous
operation enables TGR to be incremented with respect to a single time base. Channels 0 to 2 can
all be designated for synchronous operation.
Example of Synchronous Operation Setting Procedure:
Figure 12.14 shows an example of the synchronous operation setting procedure.
Rev.2.00 May. 28, 2009 Page 344 of 732
REJ09B0059-0200
[1]
[2]
[3]
[4]
[5]
<Synchronous presetting>
Synchronous Operation
Synchronous presetting
Synchronous operation
Set 1 to the SYNC bits in TSYR corresponding to the channels to be designated for synchronous
operation.
When TCNT of any of the channels designated for synchronous operation is
written to, the same value is simultaneously written to the other TCNT.
Use bits CCLR2 to CCLR0 in TCR to specify TCNT clearing by input capture/output compare,
etc.
Use bits CCLR2 to CCLR0 in TCR to designate synchronous clearing for the counter clearing
source.
Set 1 to the CST bits in TSTR for the relevant channels, to start the count operation.
Figure 12.14 Example of Synchronous Operation Setting Procedure
Set synchronous
Set TCNT
operation
selection
[1]
[2]
Synchronous clearing
<Counter clearing>
source generation
clearing source
Select counter
Start counting
channel?
Clearing
Yes
No
[3]
[5]
<Synchronous clearing>
Set synchronous
counter clearing
Start counting
[4]
[5]
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