R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 724

• 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: -

Section 17 Watchdog Timer and Reset (WDT)
17.3.3
WDTBST is a readable/writable 32-bit register that clears WDTBCNT. Use a longword access to
clear the WDTBCNT, with H'55 in the bits 31 to 24. The reading value of bits WDTBST is always
H'0000 0000.
Initial value:
Initial value:
Rev. 2.00 May 22, 2009 Page 654 of 1982
REJ09B0256-0200
Bit
31 to 24
23 to 0
PCI R/W:
PCI R/W:
Bit:
Bit:
Watchdog timer Base Stop Time Register (WDTBST)
Bit Name
(Given
code)

R/W
31
15
R
0
0
R/W
30
14
R
0
0
R/W
29
13
Initial
Value
R/W
R
R
0
0
(Given code)
R/W
28
12
R
0
0
R/W
H'00
All 0
R/W
27
11
R
0
0
R/W
26
10
R
0
0
Description
Reserved (Given code for writing)
These bits are always read as H'00. To write to this
register, the write value must be H'55.
Reserved
These bits are always read as 0. The write value
should always be 0.
R/W
25
R
0
9
0
R/W
24
R
0
8
0
23
R
R
0
7
0
22
R
R
0
6
0
21
R
R
0
5
0
20
R
R
0
4
0
19
R
R
0
3
0
18
R
R
0
2
0
17
R
R
0
1
0
16
R
R
0
0
0