DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 455

• 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: -

14.1.3
Table 14.1 describes the WDT input pin.
Table 14.1 WDT Pin
Name
Reset output pin
External subclock input pin
Legend:
TCSR: Timer control/status register
TCNT: Timer counter
WOVI1
(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 *
2
Pin Configuration
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
Interrupt
control
control
Figure 14.1 (b) Block Diagram of WDT1
Reset
Symbol
RESO
EXCL
Overflow
Module bus
I/O
Output
Input
TCNT
Clock
WDT1
Function
Watchdog timer mode counter overflow signal
output
WDT1 prescaler counter input clock
Rev. 4.00 Sep 27, 2006 page 409 of 1130
select
Clock
TCSR
Section 14 Watchdog Timer (WDT)
Internal clock
source
interface
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Bus
REJ09B0327-0400
SUB
SUB
SUB
SUB
SUB
SUB
SUB
SUB
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