HD6417727F160V Renesas Electronics America, HD6417727F160V Datasheet - Page 527

• Manufacturer Part Number: HD6417727F160V
• Description: MPU 3V 16K PB-FREE 240-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F160V

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 160MHz
• 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): 1.7 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: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

16.2.15 RTC Control Register 1 (RCR1)
The RTC control register 1 (RCR1) is an 8-bit read/write register that contains carry flags and
alarm flags. It also selects whether to generate interrupts for each flag. Avoid the use of read-
modify-write processing for this register because flags are sometimes set after an operand read.
RCR1 is an 8-bit read/write register. The CIE, AIE, and AF bits are initialized by a power-on reset
or manual reset. However, the value of the CF flag is undefined after a power-on reset or manual
reset. It must therefore be initialized without fail before use. This register is not initialized in
standby mode.
Bit 7—Carry Flag (CF): Status flag that indicates that a carry has occurred. CF is set to 1 when a
carry occurs in R64CNT or RSECCNT. If the count register is read at this time, the value is not
guaranteed; therefore, another read is required.
Bit 7: CF
0
1
Bits 6, 5, 2, and 1—Reserved: These bits are always read as 0 and should only be written with 0.
Bit 4—Carry Interrupt Enable Flag (CIE): Enables or disables interrupt generation when the
carry flag (CF) is set to 1.
Bit 4: CIE
0
1
Initial value:
R/W:
Bit:
Description
No carry in R64CNT or RSECCNT.
Clearing condition: When 0 is written to CF
Setting condition:
Carry occurred in RSECCNT
Read of R64CNT at carry occurrence
When 1 is written to CF
Description
A carry interrupt is not generated when the CF flag is set to 1
A carry interrupt is generated when the CF flag is set to 1
R/W
CF
—
7
—
R
6
0
—
R
5
0
R/W
CIE
4
0
Rev.6.00 Mar. 27, 2009 Page 469 of 1036
R/W
AIE
3
0
Section 16 Realtime Clock (RTC)
—
R
2
0
REJ09B0254-0600
—
R
1
0
(Initial value)
R/W
AF
0
0