UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 332
UPD78F0550MA-FAA-AX
Manufacturer Part Number
UPD78F0550MA-FAA-AX
Description
MCU 8BIT 16-SSOP
Manufacturer
Renesas Electronics America
Series
78K0/Kx2-Lr
Datasheet
1.UPD78F0550MA-FAA-AX.pdf
(734 pages)
Specifications of UPD78F0550MA-FAA-AX
Package / Case
*
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Speed
10MHz
Number Of I /o
12
Core Processor
78K/0
Program Memory Type
FLASH
Ram Size
384 x 8
Program Memory Size
4KB (4K x 8)
Data Converters
A/D 4x10b
Oscillator Type
Internal
Peripherals
LVD, POR, PWM, WDT
Connectivity
I²C, LIN, UART/USART
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F0550MA-FAA-AX
Manufacturer:
Renesas
Quantity:
800
Part Number:
UPD78F0550MA-FAA-AX
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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9.1 Functions of Watchdog Timer
signal is generated.
For details of RESF, refer to CHAPTER 20 RESET FUNCTION.
332
The watchdog timer is mounted onto all 78K0/Kx2-L microcontroller products.
The watchdog timer operates on the internal low-speed oscillation clock.
The watchdog timer is used to detect an inadvertent program loop. If a program loop is detected, an internal reset
Program loop is detected in the following cases.
When a reset occurs due to the watchdog timer, bit 4 (WDTRF) of the reset control flag register (RESF) is set to 1.
If the watchdog timer counter overflows
If a 1-bit manipulation instruction is executed on the watchdog timer enable register (WDTE)
If data other than “ACH” is written to WDTE
If data is written to WDTE during a window close period
If the instruction is fetched from an area not set by the IMS register (detection of an invalid check while the CPU
hangs up)
If the CPU accesses an area that is not set by the IMS register (excluding FB00H to FFFFH) by executing a
read/write instruction (detection of an abnormal access during a CPU program loop)
CHAPTER 9 WATCHDOG TIMER
Preliminary User’s Manual U19111EJ2V1UD
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