EM78P372KSS20 datasheet(48/118 Pages) EMC

48 / 118 page

EM78P372K

8-bit Microcontroller



Product Specification (V1.4) 05.11.2016

(This specification is subject to change without prior notice)

Case [c] If the Comparator output status change is used to wake-up the EM78P372K

and the CMPWE bit of the RE register is enabled before SLEP, WDT must be

disabled by software. Hence, the EM78P372K can be awakened only with

Case 4. Wake-up time is dependent on the oscillator mode. In RC mode,

Wake-up time is 10

s (for stable oscillators). In HXT2 (4MHz) mode,

Wake-up time is 800

s (for stable oscillators), and in LXT2 mode, Wake-up

time is 2s ~ 3s.

Case [d] If completed AD conversion is used to wake-up the EM78P372K and ADWE

bit of RE register is enabled before SLEP, WDT must be disabled by

software. Hence, the EM78P372K can be awakened only with Case 5. The

wake-up time is 15 TAD (ADC clock period).

Case[e] If Low voltage detector is used to wake-up the EM78P372K and the LVDWE

bit of Bank 0-RE register is enabled before SLEP, WDT must be disabled by

software. Hence, the EM78P372K can be awakened only with Case 6.

Wake-up time is dependent on oscillator mode.

If Port 5, P70, P71 Input Status Change Interrupt is used to wake up the EM78P372K

(as in Case [b] above), the following instructions must be executed before

SLEP:

R3, 6

; Select Segment 0

MOV

A, @00xx1110b

; Select WDT prescaler and Disable WDT

IOW

IOCE0

WDTC

; Clear WDT and prescaler

MOV

R5, R5

; Read Port 5

MOV

R7, R7

; Read Port 7

ENI (or DISI)

; Enable (or disable) global interrupt

MOV

A, @xxxxxx1xb

; Enable Port 5,7 input change wake-up bit

MOV

A, @1xxxxx1xb

; Enable Port 5,7 input change interrupt

IOW

IOCF0

SLEP

; Sleep

Similarly, if the Comparator Interrupt is used to wake up the EM78P372K (as in Case [c]

above), the following instructions must be executed before SLEP:

R3, 6

; Select Segment 0

MOV

A, @xxx10XXXb

; Select a comparator and P64 functions as

; CO pin

IOW

IOC80

MOV

A, @00x11110b

; Select WDT prescaler and Disable WDT,

; and enable comparator output status

; change interrupt

IOW

IOCE0

WDTC

; Clear WDT and prescaler

ENI (or DISI)

; Enable (or disable) global interrupt

MOV

A, @xxx0x1xxb

; Enable comparator output status change

; wake-up bit

MOV

SLEP

; Sleep

EM78P372KSS20 Datasheet(PDF) 48 Page - ELAN Microelectronics Corp

EM78P372KSS20 Datasheet(HTML) 48 Page - ELAN Microelectronics Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL