HD6417032F20V Renesas Electronics America, HD6417032F20V Datasheet - Page 369
HD6417032F20V
Manufacturer Part Number
HD6417032F20V
Description
SH1 ROMLESS LEAD FREE
Manufacturer
Renesas Electronics America
Series
SuperH® SH7030r
Datasheet
1.HD6417034AFI20.pdf
(689 pages)
Specifications of HD6417032F20V
Core Processor
SH-1
Core Size
32-Bit
Speed
20MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417032F20V
Manufacturer:
TI
Quantity:
201
- Current page: 369 of 689
- Download datasheet (5Mb)
12.1.4
Table 12.2 summarizes the three WDT registers. They are used to select the clock, switch the
WDT mode, and control the reset signal.
Table 12.2 WDT Registers
Name
Timer control/status register
Timer counter
Reset control/status register
Notes: 1. Write by word transfer. A byte or longword write cannot be used.
12.2
12.2.1
TCNT is an eight-bit readable and writable up-counter. TCNT differs from other registers in that it
is more difficult to write. See section 12.2.4, Notes on Register Access, for details. When the timer
enable bit (TME) in the timer control/status register (TCSR) is set to 1, the timer counter starts
counting pulses of an internal clock source selected by clock select bits 2–0 (CKS2–CKS0) in
TCSR. When the value of TCNT overflows (changes from H'FF to H'00), a watchdog timer
overflow signal (WDTOVF) or interval timer interrupt (ITI) is generated, depending on the mode
selected with the WT/IT bit in TCSR. TCNT is initialized to H'00 by a reset and when the TME
bit is cleared to 0. It is not initialized in standby mode.
Bit
Initial value
Read/Write
2. Read by byte transfer. The correct value cannot be obtained by a word or longword
3. Only 0 can be written in bit 7, to clear the flag.
4. Only the values of bits A27–A24 and A8–A0 are valid; bits A23–A9 are ignored. For
Register Configuration
Register Descriptions
Timer Counter (TCNT)
read.
details on the register addresses, see section 8.3.5, Area Descriptions
R/W
7
0
Abbreviation R/W
TCSR
TCNT
RSTCSR
R/W
6
0
R/W
5
0
R/(W) *
R/W
R/(W) *
R/W
3
3
4
0
Initial
Value
H'18
H'00
H'1F
Rev. 7.00 Jan 31, 2006 page 341 of 658
R/W
Section 12 Watchdog Timer (WDT)
3
0
Write *
H'5FFFFB8
H'5FFFFBA
R/W
1
2
0
Address *
REJ09B0272-0700
R/W
Read *
H'5FFFFB8
H'5FFFFB9
H'5FFFFBB
1
0
4
2
R/W
0
0
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