Ledastcreg (0X0B00 024A) - NEC VR4181 mPD30181 User Manual

18.2.4 LEDASTCREG (0x0B00 024A)

Bit 15
Name ASTC15
R/W R/W
RTCRST 0
Other resets 0
Bit 7
Name ASTC7
R/W R/W
RTCRST 1
Other resets 1
Bit Name
15 to 0 ASTC(15:0)
This register is used to set the number of ON/OFF times prior to automatic stopping of LED blink. The set value is
read on a read. The initial setting is 1,200 times of ON/OFF pairs (i.e. one hour in which each time includes one
second of ON time and two seconds of OFF time).
The pair of operations in which the LED is switched ON once and OFF once is counted as "1" by this counter. The
counter counts down from the set value and an LEDINT interrupt request occurs when it reaches zero.
Caution Setting a zero to this register is prohibited. The operation is not guaranteed if zero is set to this
register.
CHAPTER 18 LED CONTROL UNIT (LED)
14 13
ASTC14 ASTC13 ASTC12
R/W R/W
0 0
0 0
6 5
ASTC6 ASTC5
R/W R/W
0 1
0 1
LED auto stop time count
User's Manual U14272EJ3V0UM
12 11
ASTC11 ASTC10
R/W R/W
0 0
0 0
4 3
ASTC4 ASTC3 ASTC2
R/W R/W
1 0
1 0
Function
10 9
ASTC9 ASTC8
R/W R/W R/W
1 0
1 0
2 1
ASTC1 ASTC0
R/W R/W R/W
0 0
0 0
8
0
0
0
0
0
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