M30624FGNHP#U5 Renesas Electronics America, M30624FGNHP#U5 Datasheet - Page 73

• Manufacturer Part Number: M30624FGNHP#U5
• Description: MCU 3V 256K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/60r

Specifications of M30624FGNHP#U5

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 20K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 18x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Watchdog Timer
70
Figure 1.13.2. Watchdog timer control and start registers
Figure 1.13.1. Block diagram of watchdog timer
Write to the watchdog timer
start register
(address 000E
HOLD
RESET
BCLK
b7
Watchdog timer control register
Watchdog timer start register
b7
b6
0
16
b5
0
)
b4
b3
b2
b1
Prescaler
b0
1/128
b0
1/16
1/2
The watchdog timer is initialized and starts counting after a write instruction to
this register. The watchdog timer value is always initialized to “7FFF
regardless of whatever value is written.
Bit symbol
High-order bit of watchdog timer
Reserved bit
Reserved bit
WDC7
Symbol
Symbol
“CM07 = 0”
“WDC7 = 1”
“CM07 = 1”
“CM07 = 0”
“WDC7 = 0”
WDTS
WDC
Prescaler select bit
Bit name
Address
Address
000E
000F
Watchdog timer
16
16
Function
Set to
“7FFF
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Indeterminate
When reset
000XXXXX
When reset
Must always be set to “0”
Must always be set to “0”
0 : Divided by 16
1 : Divided by 128
16
”
2
Function
“PM12 = 0”
“PM12 = 1”
Watchdog timer
interrupt request
M16C / 62N Group
Mitsubishi microcomputers
16
Reset
”
R
R
W
W