Epson RX-8564LC bit, bit, bit, bit, bit, bit, bit, bit, note, Page −, Function, ETM12E-01, 12.2. Register table

RX − 8564 LC

12.2. Register table

Address [h]	Function	bit 7	bit 6	bit 5	bit 4	bit 3	bit 2	bit 1	bit 0	note
00	Control 1	TEST	0	STOP	0	TEST	0	0	0	∗ 3 , ∗ 4
01	Control 2	0	⋅	0	TI / TP	AF	TF	AIE	TIE	∗ 4 , ∗ 5
02	Seconds	VL	40	20	10	8	4	2	1	∗ 1
03	Minutes	⋅	40	20	10	8	4	2	1	∗ 5
04	Hours	⋅	⋅	20	10	8	4	2	1	∗ 5
05	Days	⋅	⋅	20	10	8	4	2	1	∗ 5
06	Weekdays	⋅	⋅	⋅	⋅	⋅	4	2	1	∗ 5
07	Months / Century	C	⋅	⋅	10	8	4	2	1	∗ 5
08	Years	80	40	20	10	8	4	2	1
09	Minute Alarm	AE	40	20	10	8	4	2	1
0A	Hour Alarm	AE	⋅	20	10	8	4	2	1	∗ 5
0B	Day Alarm	AE	⋅	20	10	8	4	2	1	∗ 5
0C	Weekday Alarm	AE	⋅	⋅	⋅	⋅	4	2	1	∗ 5
0D	CLKOUT frequency	FE	⋅	⋅	⋅	⋅	⋅	FD1	FD0	∗ 2 , ∗ 5
0E	Timer control	TE	⋅	⋅	⋅	⋅	⋅	TD1	TD0	∗ 5
0F	Timer	128	64	32	16	8	4	2	1

Note)

∗1.

∗2.

∗3.

∗4.

∗5.

During the initial power-on (from 0 V) and if the value of the VL bit is "1" when the VL bit is read, be sure to initialize all registers before using them.

When doing this, be careful to avoid setting incorrect data as the date or time, as timed operations cannot be guaranteed if incorrect date or time data has been set.

During the initial power-on (from 0 V), the power-on reset function sets "1" to the VL bit.

∗Since the value of other registers is undefined at this time, be sure to reset all registers before using them.

During the initial power-on (from 0 V), the power-on reset function sets "1" to the FE bit and the FD1 and FD0 bits are reset to "0".

∗If the CLKOE input pin is at high level ("H"), output from the CLKOUT output pin is at 32.768 kHz.

The two TEST bits for address 00 (Control 1) are for use by Seiko Epson Corporation.

When initializing, be sure to write "0". Afterward, be sure to write "0" whenever writing to these bits.

∗This device's operations are not guaranteed if "1" has been set to any of these bits. All bits marked with "0" should have a value of "0" after initialization.

All bits marked with “x” are read-only bits whose value when read is undefined. Be sure to mask these bits after they are read.

Page − 11 ETM12E-01