D6417709SF167BV Renesas Electronics America, D6417709SF167BV Datasheet - Page 457

• Manufacturer Part Number: D6417709SF167BV
• Description: IC SUPER H MPU ROMLESS 208LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of D6417709SF167BV

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 167MHz
• Connectivity: EBI/EMI, FIFO, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 96
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.75 V ~ 2.05 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

13.2
13.2.1
The 64-Hz counter (R64CNT) is an 8-bit read-only register that indicates the states of the RTC
divider circuit, RTC prescaler, and R64CNT between 64 Hz and 1 Hz.
R64CNT is initialized to H'00 by setting the RESET bit in RTC control register 2 (RCR2) or the
ADJ bit in RCR2 to 1.
R64CNT is not initialized by a power-on reset or manual reset, or in standby mode.
Bit 7 is always read as 0.
13.2.2
The second counter (RSECCNT) is an 8-bit readable/writable register 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 range that can be set is 00–59 (decimal). Errant operation will result if any other value is set.
Carry out write processing after halting the count operation with the START bit in RCR2.
RSECCNT is not initialized by a power-on reset or manual reset, or in standby mode.
Initial value:
Initial value:
RTC Registers
64-Hz Counter (R64CNT)
Second Counter (RSECCNT)
R/W:
R/W:
Bit:
Bit:
—
—
R
R
7
0
7
0
R/W
1Hz
—
—
R
6
6
10 seconds
R/W
2Hz
—
—
R
5
5
R/W
4Hz
—
—
R
4
4
R/W
8Hz
—
—
R
3
3
Rev. 5.00, 09/03, page 411 of 760
16Hz
R/W
—
—
R
2
2
1 second
32Hz
R/W
—
—
R
1
1
64Hz
R/W
—
—
R
0
0