HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 409
HD6417751RF240V
Manufacturer Part Number
HD6417751RF240V
Description
MPU 1.5/3.3V 0K PB-FREE 256-QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417751RBP200DV.pdf
(1226 pages)
Specifications of HD6417751RF240V
Core Processor
SH-4
Core Size
32-Bit
Speed
240MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
39
Program Memory Type
ROMless
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
256-QFP Exposed Pad, 256-eQFP, 256-HQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417751RF240V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 409 of 1226
- Download datasheet (7Mb)
11.3
Examples of the use of the RTC are shown below.
11.3.1
Figure 11.2 shows examples of the time setting procedures.
The procedure for setting the time after stopping the clock is shown in figure 11.2 (a). The
programming for this method is simple, and it is useful for setting all the counters, from second to
year.
Yes
Operation
Time Setting Procedures
Set second/minute/hour/day/
day-of-week/month/year
Write to counter register
Reset frequency divider
Start clock operation
Figure 11.2 Examples of Time Setting Procedures
Clear carry flag
Carry flag = 1?
Stop clock
(b) Setting time while clock is running
(a) Setting time after stopping clock
No
Set RCR2.RESET to 1
Clear RCR2.START to 0
In any order
Set RCR2.START to 1
Clear RCR1.CF to 0
(Write 1 to RCR1.AF so that alarm flag
is not cleared)
Set RYRCNT first and RSECCNT last
Read RCR1 register and check CF bit
Rev.4.00 Oct. 10, 2008 Page 309 of 1122
11. Realtime Clock (RTC)
REJ09B0370-0400
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