EM78M611E

Universal Serial Bus Series Microcontroller

R3 [2] Zero flag. It will be set to 1 when the result of an arithmetic or logic operation is zero.

R3 [3] Power down flag. It will be set to 1 during Power-on phase or by “WDTC” command and cleared when the MCU enters into Power down mode. It remains in its previous state after a Watchdog Reset.

0: Power down

1: Power-on

R3 [4] Time-out flag. It will be set to 1 during Power-on phase or by “WDTC” command. It is reset to 0 by WDT time-out.

0: Watchdog timer overflow occurs

1: No Watchdog timer overflow

The various states of Power down flag and Time-out flag at different conditions are shown below:

T

P

Condition

 

 

 

1

1

0

1

1

1

1 *P 0 0

Power-on reset WDTC instruction WDT time-out Power down mode

Wake up caused by port change during Power down mode

*P: Previous status before WDT reset

R3 [5-7] Page selection bits. These three bits are used to select the program memory page.

PS2

PS1

PS0

Program Memory Page [Address]

 

 

 

 

0

0

0

Page 0 [0000-03FF]

 

 

 

 

0

0

1

Page 1 [0400-07FF]

 

 

 

 

0

1

0

Page 2 [0800-0BFF]

 

 

 

 

0

1

1

Page 3 [0C00-0FFF]

 

 

 

 

1

0

0

Page 4 [1000-13FF]

 

 

 

 

1

0

1

Page 5 [1400-17FF]

 

 

 

 

12

Product Specification (V1.1) 11.22.2006

(This specification is subject to change without further notice)

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Image 16
IBM EM78M611E manual Condition, Program Memory Page Address