M30855FJGP#D3 Renesas Electronics America, M30855FJGP#D3 Datasheet - Page 155

• Manufacturer Part Number: M30855FJGP#D3
• Description: MCU 3/5V 512K I-TEMP 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M32C/80r

Specifications of M30855FJGP#D3

• Core Processor: M32C/80
• Core Size: 16/32-Bit
• Speed: 32MHz
• Connectivity: CAN, I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 121
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 34x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

R
R
M
e
E
3
. v
J
2
Figure 12.2 WDC Register and WDTS Register
0
C
1
9
0 .
8 /
B
0
3
5
0
3
G
J
7
u
o r
0 -
. l
Watchdog Timer Control Register
b7
u
0
1
Watchdog Timer Start Register
b7
NOTES:
p
, 1
0
b6
0
3
(
2
M
1. The WDC5 bit remains set to "1", regardless of setting to "1" or "0".
2. The WDC5 bit is set to "0" when power is turned on and can be set to "1" by program only.
3. The WDC5 bit maintains a value set before reset, even after reset has been performed.
0
NOTES:
b5
3
0
5
2
1. Write the WDTS register after the watchdog timer interrupt is generated.
b4
C
8 /
Page 130
b3
, 5
b2
M
3
b1
2
C
f o
b0
8 /
b0
4
5
(b4 - b0)
9
Symbol
) T
WDC5
WDC7
The watchdog timer is reset to start counting by a write instruction to the
WDTS register. Default value of the watchdog timer is always set to
"7FFF
4
(b6)
Bit
Symbol
WDC
Symbol
WDTS
16
" regardless of the value written.
Cold Start-up/
Warm Start-up
Determine Flag
High-Order Bit of the Watchdog Timer
Reserved Bit
Prescaler Select Bit
Bit Name
(1)
Address
000F
Address
000E
(1,2, 3)
16
16
Function
0 : Cold start-up
1 : Warm start-up
Set to "0"
0 : Divide-by-16
1 : Divide-by-128
After Reset
000X XXXX
Function
After Reset
Indeterminate
2
12. Watchdog Timer
RW
RW
RW
RW
RO
WO
RW