DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 454

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 12 Watchdog Timer
12.1.2
Figure 12.1 shows a block diagram of the WDT.
12.1.3
Table 12.1 summarizes the WDT registers.
Table 12.1 WDT Registers
Write *
H'FFA8
H'FFAA
Notes: 1. Lower 16 bits of the address.
Rev. 3.00 Mar 21, 2006 page 424 of 814
REJ09B0302-0300
Interrupt signal
Reset (internal)
Legend:
TCNT:
TCSR:
RSTCSR:
Address *
2
2. Write word data starting at this address.
3. Only 0 can be written in bit 7, to clear the flag.
Block Diagram
Register Configuration
Timer counter
Timer control/status register
Reset control/status register
Read
H'FFA8
H'FFA9
H'FFAB
1
(interval timer)
Name
Timer control/status register
Timer counter
Reset control/status register
Reset control
Figure 12.1 WDT Block Diagram
RSTCSR
Interrupt
control
Overflow
Clock
selector
TCNT
TCSR
Clock
Abbre-
viation
TCSR
TCNT
RSTCSR
Internal clock sources
/2
/32
/64
/128
/256
/512
/2048
/4096
R/W
R/(W) *
R/W
R/(W) *
control
Read/
write
3
3
Internal
data bus
Initial
Value
H'18
H'00
H'3F