HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 391

• 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: -

11.1
This LSI includes an on-chip realtime clock (RTC) and a 32.768 kHz crystal oscillation circuit for
use by the RTC.
11.1.1
The RTC has the following features.
• Clock and calendar functions (BCD display)
• 1 to 64 Hz timer (binary display)
• Start/stop function
• 30-second adjustment function
• Alarm interrupts
• Periodic interrupts
• Carry interrupt
• Automatic leap year adjustment
Counts seconds, minutes, hours, day-of-week, days, months, and years.
The 64 Hz counter register indicates a state of 64 Hz to 1 Hz within the RTC frequency divider
Comparison with second, minute, hour, day-of-week, day, month, or year (SH7751R only) can
be selected as the alarm interrupt condition
An interrupt period of 1/256 second, 1/64 second, 1/16 second, 1/4 second, 1/2 second, 1
second, or 2 seconds can be selected
Carry interrupt function indicating a second counter carry, or a 64 Hz counter carry when the
64 Hz counter is read
Overview
Features
Section 11 Realtime Clock (RTC)
Rev.4.00 Oct. 10, 2008 Page 291 of 1122
11. Realtime Clock (RTC)
REJ09B0370-0400