HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 552

• Manufacturer Part Number: HD6417712BPV
• Description: MPU 1.5/3.3V 0K PB-FREE 256-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Ethernetr

Specifications of HD6417712BPV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, FIFO, SCI, SIO
• Peripherals: DMA, POR, WDT
• Number Of I /o: 24
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 15 Realtime Clock (RTC)
• RTC control register 1 (RCR1)
• RTC control register 2 (RCR2)
• RTC control register 3 (RCR3)
15.3.1
R64CNT indicates the state of the divider circuit (RTC prescaler and R64CNT) between 64 Hz
and 1 Hz.
R64CNT is reset to H'00 by setting the RESET bit in RCR2 or the ADJ bit in RCR2 to 1.
R64CNT is an 8-bit read-only register and not initialized by a power-on reset or manual reset, or
in standby mode.
15.3.2
RSECCNT is used for setting/counting in the BCD-coded second section. The count operation is
performed by a carry for each second of the 64-Hz counter.
The range of second can be set is 0 to 59 (decimal). Errant operation will result if any other value
is set. Carry out write processing after stopping the count operation with the START bit in RCR2.
Rev. 1.00 Dec. 27, 2005 Page 508 of 932
REJ09B0269-0100
Bit
7
6 to 0
64-Hz Counter (R64CNT)
Second Counter (RSECCNT)
Bit Name


Initial Value
0

R/W
R
R
Description
Reserved
This bit is always read as 0.
64-Hz Counter
Each bit (bits 6 to 0) indicates the state of the
6:
5:
4:
3:
2:
1:
0:
RTC divider circuit between 64 and 1Hz.
Bit
Frequency
1 Hz
2 Hz
4 Hz
8 Hz
16 Hz
32 Hz
64 Hz