DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 456
DF3052BX25V
Manufacturer Part Number
DF3052BX25V
Description
MCU 5V 512K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3052BX25V
Core Processor
H8/300H
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
70
Program Memory Size
512KB (512K 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
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF3052BX25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 456 of 847
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Section 12 Watchdog Timer
12.2.2
TCSR is an 8-bit readable and writable *
and clock source.
Bit
Initial value
Read/Write
Bits 7 to 5 are initialized to 0 by a reset and in standby mode. Bits 2 to 0 are initialized to 0 by a
reset. In software standby mode bits 2 to 0 are not initialized, but retain their previous values.
Notes: 1. TCSR differs from other registers in being more difficult to write. For details see
Bit 7—Overflow Flag (OVF): This status flag indicates that the timer counter has overflowed
from H'FF to H'00.
Rev. 3.00 Mar 21, 2006 page 426 of 814
REJ09B0302-0300
Bit 7: OVF
0
1
2. Only 0 can be written, to clear the flag.
Timer Control/Status Register (TCSR)
section 12.2.4, Notes on Register Access.
R/(W)
Overflow flag
Status flag indicating overflow
OVF
7
0
Description
[Clearing condition]
Cleared by reading OVF when OVF = 1, then writing 0 in OVF
[Setting condition]
Set when TCNT changes from H'FF to H'00
*2
WT/IT
Timer mode select
Selects the mode
R/W
6
0
Timer enable
TME
Selects whether TCNT runs or halts
R/W
5
0
1
register. Its functions include selecting the timer mode
—
—
4
1
Reserved bits
—
—
3
1
CKS2
R/W
2
0
Clock select
These bits select the
TCNT clock source
CKS1
R/W
1
0
(Initial value)
CKS0
R/W
0
0
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