DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 456
![IC H8S MCU FLASH 128K 100-QFP](/photos/28/61/286108/100-tqfp_sml.jpg)
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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Section 14 Watchdog Timer (WDT)
14.1.4
The WDT has four registers, as summarized in table 14.2. These registers control clock selection,
WDT mode switching, the reset signal, etc.
Table 14.2 WDT Registers
Channel
0
1
Common
Notes: 1. Lower 16 bits of the address.
14.2
14.2.1
TCNT is an 8-bit readable/writable * up-counter.
When the TME bit is set to 1 in TCSR, TCNT starts counting pulses generated from the internal
clock source selected by bits CKS2 to CKS0 in TCSR. When the count overflows (changes from
H'FF to H'00), the OVF flag in TCSR is set to 1. Watchdog timer overflow signal (RESO) output,
an internal reset, NMI interrupt, interval timer interrupt (WOVI), etc., can be generated, depending
on the mode selected by the WT/IT bit and RST/NMI bit.
Rev. 4.00 Sep 27, 2006 page 410 of 1130
REJ09B0327-0400
Bit
Initial value
Read/Write
2. For details of write operations, see section 14.2.4, Notes on Register Access.
3. Only 0 can be written in bit 7, to clear the flag.
Register Configuration
Register Descriptions
Timer Counter (TCNT)
Name
Timer control/status
register 0
Timer counter 0
Timer control/status
register 1
Timer counter 1
System control
register
R/W
7
0
R/W
6
0
Abbreviation R/W
TCSR0
TCNT0
TCSR1
TCNT1
SYSCR
R/W
5
0
R/W
4
0
R/(W) *
R/W
R/(W) *
R/W
R/W
3
3
R/W
3
0
Initial Value
H'00
H'00
H'00
H'00
H'09
R/W
2
0
Write *
H'FFA8
H'FFA8
H'FFEA
H'FFEA
H'FFC4
R/W
1
0
Address *
2
Read
H'FFA8
H'FFA9
H'FFEA
H'FFEB
H'FFC4
R/W
0
0
1
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