R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 725

• Manufacturer Part Number: R5S77631Y266BGV
• Description: IC SUPERH MPU ROMLESS 499BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R5S77631Y266BGV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 266MHz
• Connectivity: Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 107
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Data Converters: A/D 4x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 499-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

17.3.4
WDTCNT is a 32-bit read-only register that comprises 12-bit watchdog timer counter and counts
up on the WDTBCNT overflow signal. When WDTCNT overflows, a reset is generated in
watchdog timer mode, or an interrupt is generated in interval timer mode. Writing to WDTCNT is
invalid.
17.3.5
WDTBCNT is a 32-bit read-only register that comprises 18-bit counter and counts up on the
peripheral clock (Pck0). When WDTBCNT overflows, WDTCNT is counted up and WDTBCNT
is cleared to 0 Writing to WDTCNT is invalid.
Initial value:
Initial value:
Initial value:
Initial value:
R/W:
R/W:
R/W:
R/W:
Bit:
Bit:
Bit:
Bit:
Watchdog Timer Counter (WDTCNT)
Watchdog Timer Base Counter (WDTBCNT)
31
15
31
15
R
R
R
R
0
0
0
0
30
14
30
14
R
R
R
R
0
0
0
0
29
13
29
13
R
R
R
R
0
0
0
0
28
12
28
12
R
R
R
R
0
0
0
0
27
11
27
11
R
R
R
R
0
0
0
0
26
10
26
10
R
R
R
R
0
0
0
0
25
25
R
R
R
R
0
9
0
0
9
0
WDTBCNT
24
24
R
R
R
R
0
8
0
0
8
0
23
23
R
R
R
R
0
7
0
0
7
0
Section 17 Watchdog Timer and Reset (WDT)
Rev. 2.00 May 22, 2009 Page 655 of 1982
22
22
WDTCNT
R
R
R
R
0
6
0
0
6
0
21
21
R
R
R
R
0
5
0
0
5
0
20
20
R
R
R
R
0
4
0
0
4
0
19
19
R
R
R
R
0
3
0
0
3
0
REJ09B0256-0200
18
18
R
R
R
R
0
2
0
0
2
0
WDTBCNT
17
17
R
R
R
R
0
1
0
0
1
0
16
16
R
R
R
R
0
0
0
0
0
0