Table 1 EM78PSAP, EM78PSAM and EM78PSFK Pin Description 37 EM78PS-G I-V Curve Operating at kHz max. EM78PSAP Datasheet PDF Download -, EM78PSAP data sheet. EM78PSAP datasheet, EM78PSAP datasheets and manuals electornic semiconductor part. EM78P, EM78PN, EM78PNAM, EM78PNAP .

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Temperature This specification is subject to change without prior notice. ELAN represents no warranty for the use of the specifications described, either expressed or implied, including, but not limited, to the implied warranties of merchantability and fitness for particular purposes. Programmable free running watchdog timer? These can be pulled -high internally by software control.

Table 7 depicts how these three modes are defined. VDD, Prescaler Set to 1: Moreover, the frequency also changes slightly from one chip to another due to the manufacturing process variation.

Watchdog timer enable bit. When one of the interrupts enabled occurs, the next instruction will be fetched from address H. To avoid reset from occurring when the port6 status changed interrupt enters into interrupt vector or is used to wake-up the MCU, the WDT prescaler must be set above 1: Set Port6 or P74 or P75 Input 2.

In order to maintain a stable system frequency, the values of the Datasneet should not be less than 20pF, and that the value of Rext should not be em788p447sap-g than 1 M ohm.



The WDT will keep on running even after the oscillator driver has been turned off i. One security register to prevent intrusion of OTP memory codes?

The watchdog timer is a free running on-chip RC oscillator. Bit 2 Z Zero flag. In this case, the execution takes two instruction cycles. Based on the above reasons, it must be kept in mind that all of the supply voltage, the operation temperature, the components of the RC oscillator, the package types, the way the PCB is layout, will affect the system frequency.

The specifications of the Product and its applied technology will be updated or changed time by time. Bit 3 P Power down bit. Code Security Bit 0: Bit 4 T Time-out bit. A mA mA This specification is subject to change dahasheet prior notice. The T and P flags of R3 can be used to determine the source of the reset wake-up.

(PDF) EM78P447SAP Datasheet download

This condition may cause a poor power on reset. XTAL em788p447sap-g selection 0: The actual specifications and applied technology will be based on each confirmed order. IOCF datashet is both readable and writable. Bit 5 and Bit4: The option bits cannot be accessed during normal program execution. Table 6 shows the events that may affect the status of T and P.

In addition, the instruction set has the following features: In order to ensure the stable output of the oscillator, once the oscillator is enabled again, there is a delay for approximately 18ms1 oscillator start-up timer, OST before the next instruction of the program is executed.


EM78PSAP Datasheet(PDF) – ELAN Microelectronics Corp

Since each resonator has its own attribute, user should refer to its specification for appropriate values of C1 and C2. The WDTE bit can be read and written. Previous value before xatasheet. Refer to the section on Instruction Set. Zhangjiang, Hi-tech Park, Shanghai Telephone: Upon waking, the controller will continue to execute the succeeding address. R0 Indirect Addressing Register R0 is not a physically implemented register. There is input status change wake-up function on Port 6, P74, and P The diode D acts em78p447sap- a short circuit at the moment of power down.

The SLPC bit can be read and written. Set as TCC overflows; flag cleared by software. Any instruction that writes to R2 e. ELAN owns the intellectual property rights, concepts, ideas, inventions, know-how whether patentable or not related to the Information and Technology herein after referred as ” Information and Technology” mentioned above, and all its related industrial property rights throughout the world, as now may exist or to be created in the future.

RC oscillator input pin. While entering sleep mode, WDT if enabled is cleared but keeps on running. A serial resistor may be necessary em78447sap-g AT strip cut crystal or low frequency mode.