R8A77850BDBGV#RD0Z Renesas Electronics America, R8A77850BDBGV#RD0Z Datasheet - Page 800

• Manufacturer Part Number: R8A77850BDBGV#RD0Z
• Description: IC SUPERH MPU ROMLESS 436BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77850BDBGV#RD0Z

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 600MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 108
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1 V ~ 1.2 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 436-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

16. Watchdog Timer and Reset (WDT)
16.3.5
WDTBCNT is a 32-bit read-only register comprising an 18-bit counter that is incremented by the
peripheral clock (Pck). When WDTBCNT overflows, WDTCNT is incremented and WDTBCNT
is cleared to H'0000 0000.
WDTBCNT is only reset by a power-on reset. Writing to this register is invalid.
Rev.1.00 Jan. 10, 2008 Page 768 of 1658
REJ09B0261-0100
Initial value:
Initial value:
Bit
31 to 18
17 to 0
R/W:
R/W:
Bit:
Bit:
Watchdog Timer Base Counter (WDTBCNT)
Bit Name
⎯
WDTBCNT All 0
31
15
⎯
R
R
0
0
30
⎯
14
R
R
0
0
29
⎯
13
R
R
0
0
Initial
Value
All 0
28
12
⎯
R
R
0
0
R/W
R
R
27
11
⎯
R
R
0
0
26
10
⎯
R
R
0
0
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
Base counter value
25
⎯
R
R
0
9
0
WDTBCNT
24
⎯
R
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
WDTBCNT
17
R
R
0
1
0
16
R
R
0
0
0