UPD78F0551MA-FAA-AX Renesas Electronics America, UPD78F0551MA-FAA-AX Datasheet - Page 378
UPD78F0551MA-FAA-AX
Manufacturer Part Number
UPD78F0551MA-FAA-AX
Description
MCU 8BIT 16-SSOP
Manufacturer
Renesas Electronics America
Series
78K0/Kx2-Lr
Datasheet
1.UPD78F0551MA-FAA-AX.pdf
(822 pages)
Specifications of UPD78F0551MA-FAA-AX
Core Processor
78K/0
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
9
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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- Download datasheet (6Mb)
78K0/Kx2-L
9.2 Configuration of Watchdog Timer
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
WINDOW1 and WINDOW0
The watchdog timer includes the following hardware.
How the counter operation is controlled, overflow time, and window open period are set by the option byte.
of option byte (0080H)
WDCS2 to WDCS0 of
option byte (0080H)
CPU access signal
WDTON of option
Remark For the option byte, refer to CHAPTER 24 OPTION BYTE.
f
Window open period
Controlling counter operation of watchdog timer
Overflow time of watchdog timer
IL
byte (0080H)
/2
Control register
Setting of Watchdog Timer
controller
Clock
input
Item
Table 9-2. Setting of Option Bytes and Watchdog Timer
Watchdog timer enable
register (WDTE)
Clear, reset control
Figure 9-1. Block Diagram of Watchdog Timer
Table 9-1. Configuration of Watchdog Timer
counter
17-bit
Watchdog timer enable register (WDTE)
Count clear
signal
2
2
2
7
12
15
/f
/f
/f
error detector
IL
CPU access
IL
IL
to 2
, 2
, 2
Internal bus
14
17
10
/f
/f
/f
IL
IL
IL
,
,
determination
Selector
Window size
Bits 6 and 5 (WINDOW1, WINDOW0)
Bit 4 (WDTON)
Bits 3 to 1 (WDCS2 to WDCS0)
signal
Configuration
Overflow
signal
Option Byte (0080H)
CHAPTER 9 WATCHDOG TIMER
controller
output
Reset
Internal reset signal
364
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