HD6417708SF60V Renesas Electronics America, HD6417708SF60V Datasheet - Page 353

• Manufacturer Part Number: HD6417708SF60V
• Description: IC SUPERH MPU ROMLESS 208LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417708SF60V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 60MHz
• Connectivity: EBI/EMI, SCI, SmartCard
• Peripherals: POR, WDT
• Number Of I /o: 8
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -

Bit 2—30-Second Adjustment (ADJ): When 1 is written to the ADJ bit, times of 29 seconds or
less will be rounded to 00 seconds and 30 seconds or more to 1 minute. The divider circuit will be
simultaneously reset. This bit always reads 0.
Bit 2: ADJ
0
1 (write)
Bit 1—Reset (RESET): When 1 is written, initializes the divider circuit. This bit always reads 0.
Bit 1: RESET
0
1
Bit 0—Start Bit (START): Halts and restarts the counter (clock).
Bit 0: START
0
1
Note: The 64-Hz counter always runs unless stopped with the RTCEN bit.
12.3
12.3.1
All the registers should be set after the power is turned on.
12.3.2
Part (a) in figure 12.2 shows how to set the time when the clock is stopped. This works when the
entire calendar or clock is to be set.
Part (b) in figure 12.2 describes how to set the clock when the clock is running. This works when
only part of the calendar or clock needs to be reset (e.g., changing only the seconds or only the
hour). The write status is checked using the carry flags. When there is a carry during the writing of
new data, the new data is automatically updated. Since this causes errors in the data, the data must
be rewritten if the carry flag is set to 1.
The interrupt function can be used to determine the status of the carry flag.
RTC Operation
Initial Settings of Registers after Power-On
Setting the Time
Description
Runs normally.
30-second adjustment.
Description
Runs normally.
Divider circuit is reset.
Description
Second, minute, hour, day, week, month, year counter halts.
Second, minute, hour, day, week, month, year counter runs normally.
(Initial value)
(Initial value)
(Initial value)
333