DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 493
DF2398TE20
Manufacturer Part Number
DF2398TE20
Description
IC H8S MCU FLASH 256K 120TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Specifications of DF2398TE20
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
87
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
120-TQFP, 120-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F2398TE20
HD64F2398TE20
HD64F2398TE20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2398TE20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 493 of 1049
- Download datasheet (5Mb)
13.5
13.5.1
If a timer counter clock pulse is generated during the T
counter is not incremented. Figure 13-8 shows this operation.
13.5.2
If bits CKS2 to CKS0 in TCSR are written to while the WDT is operating, errors could occur in the incrementation.
Software must stop the watchdog timer (by clearing the TME bit to 0) before changing the value of bits CKS2 to CKS0.
13.5.3
If the mode is switched from watchdog timer to interval timer, or vice versa, while the WDT is operating, errors could
occur in the incrementation. Software must stop the watchdog timer (by clearing the TME bit to 0) before switching the
mode.
13.5.4
If the WDTOVF output signal* is input to the RES pin of the H8S/2357 Group, the H8S/2357 Group will not be
initialized correctly. Make sure that the WDTOVF signal* is not input logically to the RES pin. To reset the entire system
by means of the WDTOVF signal*, use the circuit shown in figure 13-9.
Note: * The WDTOVF pin function is not available in the F-ZTAT version, the H8S/2398, H8S/2394, H8S/2392 or
H8S/2390.
Usage Notes
Contention between Timer Counter (TCNT) Write and Increment
Changing Value of CKS2 to CKS0
Switching between Watchdog Timer Mode and Interval Timer Mode
System Reset by WDTOVF Signal
ø
Address
Internal write signal
TCNT input clock
TCNT
Figure 13-8 Contention between TCNT Write and Increment
2
TCNT write cycle
state of a TCNT write cycle, the write takes priority and the timer
T
1
N
T
2
Counter write data
Rev.6.00 Oct.28.2004 page 463 of 1016
M
REJ09B0138-0600H
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