DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 454

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 14 Watchdog Timer (WDT)
14.1.2
Figures 14.1 (a) and (b) show block diagrams of WDT0 and WDT1.
Rev. 4.00 Sep 27, 2006 page 408 of 1130
REJ09B0327-0400
Legend:
TCSR: Timer control/status register
TCNT: Timer counter
WOVI0
(interrupt request
signal)
Internal NMI
interrupt request
signal *
Notes: 1. RESO pin output goes low when the internal reset signal is generated by overflow of TCNT
RESO signal *
Internal reset
signal *
Block Diagram
2
2. The internal NMI interrupt request signal can be output independently by either WDT0 or
1
in either WDT0 or WDT1. The reset of the WDT that overflowed first takes precedence over
the internal reset signal.
WDT1. The interrupt controller does not distinguish between NMI interrupt requests from
WDT0 and WDT1.
1
Figure 14.1 (a) Block Diagram of WDT0
Interrupt
control
control
Reset
Overflow
Module bus
TCNT
Clock
WDT0
select
Clock
TCSR
Internal clock
source
interface
Bus
/2
/64
/128
/512
/2048
/8192
/32768
/131072