DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 437

• Manufacturer Part Number: DF2505BR26DV
• Description: IC H8S/2505 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505BR26DV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 26MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

12.4.4
In the case of WDT_0, if TCNT overflows in watchdog timer mode, the WOVF bit in RSTCSR is
set to 1. If TCNT overflows while the RSTE bit in RSTCSR is set to 1, an internal reset signal is
generated for the entire chip. (The WOVI interrupt is not generated.) This timing is shown in
figure 12.5.
12.5
During interval timer mode operation, an overflow generates an interval timer interrupt (WOVI).
The interval timer interrupt is requested whenever the OVF flag in TCSR is set to 1. OVF must be
cleared to 0 in the interrupt handling routine.
If an NMI request has been chosen in watchdog timer mode, an NMI request is generated when a
TCNT overflow occurs.
Table 12.2 WDT Interrupt Source
Name
WOVI
NMI
TCNT
Overflow signal
(internal signal)
WOVF
Internal reset
signal
φ
Timing of Setting Watchdog Timer Overflow Flag (WOVF)
Interrupt Sources
TCNT overflow (interval timer mode)
TCNT overflow (watchdog timer mode)
Interrupt Source
Figure 12.5 Timing of WOVF Setting
H'FF
H'00
515/516 states (WDT_1)
Rev. 6.00 Sep. 24, 2009 Page 389 of 928
518 states (WDT_0)
Section 12 Watchdog Timer (WDT)
Interrupt Flag
OVF
OVF
REJ09B0099-0600