DF2170BVTE33V Renesas Electronics America, DF2170BVTE33V Datasheet - Page 317

• Manufacturer Part Number: DF2170BVTE33V
• Description: IC H8S/2170 MCU FLASH 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2170BVTE33V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: SCI, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• For Use With: HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK2166 - DEV EVAL KIT H8S/2166
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

This LSI incorporates an 8-bit watchdog timer with one channel (WDT). If a system crash
prevents the CPU from writing to the timer counter, thus allowing it to overflow, the WDT can
generate an internal reset signal or an internal NMI interrupt signal.
When this watchdog function is not needed, the WDT can be used as an interval timer. In interval
timer operation, an interval timer interrupt is generated each time the counter overflows. A block
diagram of the WDT is shown in figure 10.1.
10.1
• Selectable from eight counter input clocks.
• Switchable between watchdog timer mode and interval timer mode
Watchdog Timer Mode:
•
Internal Timer Mode:
•
If the counter overflows, an internal reset or an internal NMI interrupt is generated.
If the counter overflows, an internal timer interrupt (WOVI) is generated.
(Interrupt request signal)
(Interrupt request signal)
Internal reset signal
Internal NMI
Features
WOVI
Legend
TCSR : Timer control/status register
TCNT : Timer counter
Section 10 Watchdog Timer (WDT)
Interrupt
control
control
Reset
Figure 10.1 Block Diagram of WDT
Overflow
Module bus
TCNT
Clock
WDT
selection
Clock
TCSR
Rev. 2.00, 03/04, page 283 of 534
Internal clock
interface
φ/2
φ/64
φ/128
φ/512
φ/2048
φ/8192
φ/32768
φ/131072
Bus