DF2117VLP20V Renesas Electronics America, DF2117VLP20V Datasheet - Page 442
DF2117VLP20V
Manufacturer Part Number
DF2117VLP20V
Description
IC H8S/2117 MCU FLASH 145TFLGA
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheet
1.DF2117VBG20V.pdf
(960 pages)
Specifications of DF2117VLP20V
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
FIFO, I²C, LPC, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
112
Program Memory Size
160KB (160K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
145-TFLGA
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
-
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
DF2117VLP20V
Manufacturer:
Renesas
Quantity:
100
Part Number:
DF2117VLP20V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
- Current page: 442 of 960
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Section 14 Watchdog Timer (WDT)
14.4
14.4.1
To use the WDT as a watchdog timer, set the WT/IT bit and the TME bit in TCSR to 1. While the
WDT is used as a watchdog timer, if TCNT overflows without being rewritten because of a
system malfunction or another error, an internal reset or NMI interrupt request is generated. TCNT
does not overflow while the system is operating normally. Software must prevent TCNT
overflows by rewriting the TCNT value (normally be writing H'00) before overflows occurs.
If the RST/NMI bit of TCSR is set to 1, when the TCNT overflows, an internal reset signal for this
LSI is issued for 518 system clocks as shown in figure 14.2. If the RST/NMI bit is cleared to 0,
when the TCNT overflows, an NMI interrupt request is generated.
An internal reset request from the watchdog timer and a reset input from the RES pin are
processed in the same vector. Reset source can be identified by the XRST bit status in SYSCR.
If a reset caused by a signal input to the RES pin occurs at the same time as a reset caused by a
WDT overflow, the RES pin reset has priority and the XRST bit in SYSCR is set to 1.
An NMI interrupt request from the watchdog timer and an interrupt request from the NMI pin are
processed in the same vector. Do not handle an NMI interrupt request from the watchdog timer
and an interrupt request from the NMI pin at the same time.
Rev. 3.00 Sep. 28, 2009 Page 396 of 910
REJ09B0350-0300
Operation
Watchdog Timer Mode
Internal reset
signal
[Legned]
WT/IT:
TME:
OVF:
Note * After the OVF bit becomes 1, it is cleared to 0 by an internal reset.
Figure 14.2 Watchdog Timer Mode (RST/NMI = 1) Operation
The XRST bit is also cleared to 0.
Timer mode select bit
Timer enable bit
Overflow flag
H'FF
H'00
TCNT value
WT/IT = 1
TME = 1
Write H'00 to
TCNT
518 System clocks
Overflow
OVF = 1*
WT/IT = 1
TME = 1
Write H'00 to
TCNT
Time
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