HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 407

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

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: -

Bit 2—30-Second Adjustment (ADJ): Used for 30-second adjustment. When 1 is written to this
bit, a value up to 29 seconds is rounded down to 00 seconds, and a value of 30 seconds or more is
rounded up to 1 minute. The frequency divider circuits (RTC prescaler and R64CNT) are also
reset at this time. This bit always returns 0 if read.
Bit 2: ADJ
0
1
Bit 1—Reset (RESET): The frequency divider circuits are initialized by writing 1 to this bit.
When 1 is written to the RESET bit, the frequency divider circuits (RTC prescaler and R64CNT)
are reset and the RESET bit is automatically cleared to 0 (i.e. does not need to be written with 0).
Bit 1: RESET
0
1
Bit 0—Start Bit (START): Stops and restarts counter (clock) operation.
Bit 0: START
0
1
Note:
*
The 64 Hz counter continues to operate unless stopped by means of the RTCEN bit.
Description
Normal clock operation
30-second adjustment performed
Description
Normal clock operation
Frequency divider circuits are reset
Description
Second, minute, hour, day, day-of-week, month, and year counters are
stopped*
Second, minute, hour, day, day-of-week, month, and year counters operate
normally*
Rev.4.00 Oct. 10, 2008 Page 307 of 1122
11. Realtime Clock (RTC)
REJ09B0370-0400
(Initial value)
(Initial value)
(Initial value)