HD6417727F100C Renesas Electronics America, HD6417727F100C Datasheet - Page 519

• Manufacturer Part Number: HD6417727F100C
• Description: IC SUPERH MPU ROMLESS 240QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F100C

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

16.2
16.2.1
The 64-Hz counter (R64CNT) is an 8-bit read-only register that indicates the state of the RTC
divider circuits (RTC prescaler or R64CNT) between 64 Hz and 1 Hz.
R64CNT is reset to H'00 when the RESET bit in RTC control register 2 (RCR2) or the ADJ bit in
RCR2 is set to 1.
R64CNT is not initialized by a power-on reset or manual reset, or in standby mode, and the
operation is continued.
Bit 7 is always read as 0.
16.2.2
The second counter (RSECCNT) is an 8-bit read/write register that is used for setting/counting in
the BCD-coded second section of the RTC. The count operation is performed by a carry for each
second of the 64-Hz counter.
The settable range is 00 to 59 in decimal. If other values are set, correct operation is not provided.
When modifying RSECCNT, check that the count operation has been halted with the START bit
in RCR2.
RSECCNT is not initialized by a power-on reset or manual reset, or in standby mode, and the
operation is continued.
Initial value:
Initial value:
Register Descriptions
64-Hz Counter (R64CNT)
Second Counter (RSECCNT)
R/W:
R/W:
Bit:
Bit:
—
—
R
R
7
7
0
0
R/W
1Hz
—
—
R
6
6
10 seconds
R/W
2Hz
—
—
R
5
5
R/W
4Hz
—
—
R
4
4
Rev.6.00 Mar. 27, 2009 Page 461 of 1036
R/W
8Hz
—
—
R
3
3
Section 16 Realtime Clock (RTC)
16Hz
R/W
—
—
R
2
2
1 second
REJ09B0254-0600
32Hz
R/W
—
—
R
1
1
64Hz
R/W
—
—
R
0
0