DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 453
DF2148ATE20
Manufacturer Part Number
DF2148ATE20
Description
IC H8S MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148ATE20
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
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F2148ATE20
HD64F2148ATE20
HD64F2148ATE20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2148ATE20IV
Manufacturer:
Renesas Electronics America
Quantity:
135
Company:
Part Number:
DF2148ATE20IV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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14.1
This LSI have an on-chip watchdog timer with two channels (WDT0, WDT1) for monitoring
system operation. The WDT outputs an overflow signal (RESO) if a system crash prevents the
CPU from writing to the timer counter, allowing it to overflow. At the same time, the WDT can
also generate an internal reset signal or internal NMI interrupt signal.
When this watchdog function is not needed, the WDT can be used as an interval timer. In interval
timer mode, an interval timer interrupt is generated each time the counter overflows.
14.1.1
WDT features are listed below.
Switchable between watchdog timer mode and interval timer mode
Internal reset or internal interrupt generated when the timer counter overflows
RESO output in watchdog timer mode
Choice of 8 (WDT0) or 16 (WDT1) counter input clocks
WOVI interrupt generation in interval timer mode
Choice of internal reset or NMI interrupt generation in watchdog timer mode
In watchdog timer mode, a low-level signal is output from the RESO pin when the counter
overflows (when internal reset is selected)
Maximum WDT interval: system clock period
Subclock can be selected for the WDT1 input counter
Maximum interval when the subclock is selected: subclock period 256
Overview
Features
Section 14 Watchdog Timer (WDT)
Rev. 4.00 Sep 27, 2006 page 407 of 1130
131072
Section 14 Watchdog Timer (WDT)
256
REJ09B0327-0400
256
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