SC667 datasheet(18/47 Pages) SEMTECH

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SC667

Notes for figures on previous page

1 = start of cycle

2 = end of cycle

START = The time that the bank’s current remains at the start value.

TARGET = The time that the bank’s current remains at the target value.

BREATHE = The time that the bank’s current will continue to increase or

decrease during a breathe cycle. Breathe time is determined by multi-

plying the breathe rate by the number of steps (from Table1). Breathe

rate is a group dependent value of the effect rate register 0Fh.

FADE_IN = The fade time of increasing bank current, determined by

multiplying the fade rate by the number of steps (from Table 1). Fade

rate is a group dependent value of the effect rate register 0Fh.

FADE_OUT = The fade time of decreasing bank current, determined by

multiplying the fade rate by the number of steps (from Table 1). Fade

rate is a group dependent value of the effect rate register 0Fh. t

FADE_IN

is always equal to t

FADE_OUT.

BL_START = The bank current at the start of the cycle. This is the bank

dependent value of register 02h, 03h, 04h, or 05h.

BL_TARGET = The bank current at the end of the cycle. This is the bank

dependent value of register 06h, 07h, 08h, or 09h.

BL_INITIAL = The bank dependent value of register 02h, 03h, 04h, or 05h.

BL_FINAL = The bank dependent value of register 02h, 03h, 04h, or 05h.

NOTE: “START” and “TARGET” subscripts apply only to blink and

breathe effects which require a target value to complete a cycle.

“INITIAL” and “FINAL” subscripts apply when changing a bank’s current

without use of the target registers.

Applications Information (continued)

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