HD64F2166VTE33 Renesas Electronics America, HD64F2166VTE33 Datasheet - Page 386
HD64F2166VTE33
Manufacturer Part Number
HD64F2166VTE33
Description
IC H8S MCU FLASH 512K 144-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of HD64F2166VTE33
Core Processor
H8S/2000
Core Size
16-Bit
Speed
33MHz
Connectivity
I²C, IrDA, LPC, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
106
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
144-TQFP, 144-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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13.4
13.4.1
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, and the low level signal is simultaneously output from the
RESO pin for 132 states, as shown in figure 13.2. If the RST/NMI bit is cleared to 0, when the
TCNT overflows, an NMI interrupt request is generated. Here, the output from the RESO pin
remains high.
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, 03/04, page 344 of 830
Operation
Watchdog Timer Mode
Internal reset signal
Note: * After the OVF bit becomes 1, it is cleared to 0 by an internal reset.
WT/IT:
TME:
OVF:
Figure 13.2 Watchdog Timer Mode (RST/NMI = 1) Operation
H'FF
H'00
The XRST bit is also cleared to 0.
Timer mode select bit
Timer enable bit
Overflow flag
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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