Real time clock module 8-bit REAL TIME CLOCK MODULE RTC-64611/64613 Builtin crystal unit allows adjustment-free efficient operation. 8-bit data bus and high speed access (85 nsec. max.). Provided with the same interface as S-RAM and battery backup function. Interruption of alarm of sec. to day and day of week and carry interruption. Reference signal selectable in a range of 1 Hz to 64 Hz (binary). Leap year automatically adjustable (gregorian calendar). With 1 Hz output terminal. Provided with START/STOP, 30 second adjust function. RTC-64613 uses a similar mounting method to that of a normal SMD IC. Specifications (characteristics) Absolute Max. rating Symbol VDD Input voltage VIN Storage temperature TSTG Specifications Unit -0.5 to 7.0 Ta=25˚C -0.5 to VDD+0.3 RTC-64611 RTC-64613 -55 to +85 ˚C -55 to +125 RTC-64611 Under 260˚C within 10 sec. (lead part) (package should be less than 150˚C) RTC-64613 Twice at under 260˚C within 10 sec. or under 230˚C within 3 min. TSOL V 1 2 3 4 5 6 7 8 9 10 11 12 Condition Specifications — TOPR V -20 to + 75 ˚C 2.0 to 4.5 V CS ≥VDD - 0.2V VDH Unit 4.5 to 5.5 tCDR 0 min. tR tRC (85 ns.) Specifications Condition 64611 A Ta=25˚C 64611 B +55/-45(5±50) VDD=5V 64613 A +25/-15(5±20) 64613 +55/-45(5±50) fa Unit 32.0 max. ppm 15.24 -10 to +70˚C +10/-120 (25˚C reference temperature) -20 to +75˚C +10/-220 VDD=5V, Ta=25˚C, first year ±5 max. ppm/Y ppm Shock resistance S.R. Three drops on a hard board from 75 cm or 3000G x 0.3ms x 1/2 sine wave x 3 directions ±10 max. Current consumption IDD 1 IDD 2 No load VDD=5V __ CS ≥ 1.8V VDD=2V 2 max. mA 69 Symbol Condition 0.25 90° to 105° RTC-64613 µA Unless otherwise stated, characteristics (specifications) shown in the above table are based on the rated operating temperature and voltage condition. DC characteristics RTC64611 A EPSON 5101A +15/-5(5±10) (25˚C reference temperature) Frequency temperature characteristics Aging RTC-64611 0.8 ∆f/fo ( Unit: mm ) ns Frequency characteristics and current consumption characteristics Symbol External dimensions 16.3 max. ( VDD = 5V ± 0.5V, Ta = -20 to + 75˚C ) VDD= 5V±10% VDD= 2V Min. Max. Min. Max. “H” input voltage VIH 2.2 VDD VDD -0.2 VDD “L” input voltage VIL -0.3 0.8 -0.3 0.2 Input leak current IIN Three-state leak current Output leak current ITSL ILOH “H” output voltage ___ VOH IOH=-1mA “L” output voltage VOL IOL=2.1mA Input capacity CIN Output capacity COUT VIN=OV Ta=25˚C f =1.0 MHz 2.4 ±2 ±10 ±10 — V RTC64613 A EPSON9360A µA — 2.5 — ±2 Unit 0.2 VDD V 0.4 — 12.5 0.05 min. — 2.8 max. pF 1.0 0.3 (except for 1 Hz, IRQ) No. Pin terminal 13 I/O4 14 I/O5 15 I/O6 16 I/O7 17 I/O8 18 CS 19 OE 20 WE 21 NC (VDD) 22 (VDD) 23 24 VDD 13.6 Symbol Item GND H-START/STOP IRQ 1HZ A3 A2 A1 A0 I/O1 I/O2 I/O3 GND 4.4 Item Operating voltage Operating temperature Data holding voltage CS data holding time Operation restoring time Frequency tolerance Pin terminal (VDD) is to be same level as VDD. Do not connect it to any external terminals. NC is not connected internally. Operating range Item No. 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 3.3 Soldering condition Terminal connection Condition 7.9 Item Power source voltage Actual size 12.2 max. • • • • • • • • • 0° to 10° Real time clock module Address Register table 0 1 2 3 4 5 6 7 8 9 A B C D Switching characteristic Data b7 ∗ b5 2 Hz b6 1 Hz b4 4 Hz 10-sec. digit 10-min. digit 10-hour digit ∗ ∗ ∗ 10-day digit 10-month ∗ digit 10-year digit 2 Hz 4 Hz 1 Hz 10-sec. digit 10-min. digit ∗ 10-hour digit ∗ 10-day digit ∗ ENB Remarks b3 8 Hz b2 16 Hz b1 32 Hz 1-sec. digit 1-min. digit 1-hour digit Day-of-week digit 1-day digit 1-month digit 1-year digit 8 Hz 16 Hz 32 Hz 64 Hz 1-sec. digit 1-min. digit 1-hour digit Day-of-week digit 1-day digit Carry Alarm interruption interruption enable enable Input pulse level: 0.8 to 2.4V b0 64 Hz Input rise time, fall time: 5 nsec. IN/OUT timing pulse level: 1.5V Out put load: 1 TTL Gate +100pF Counter Alarm flag E Carry flag F ∗1 S.START RAM7 RAM6 RAM5 RAM4 TEST 30-sec. RESET adjustment /STOP ∗ ∗ Measuring condition Read mode Item Alarm register Control register Max. 85 — Address access time tAA Chip select access time tACS Output enable access time tOE Output hold time tOH Chip select / output set time tCLZ Output enable / output set time tOLZ Chip deselect / output floating tCHZ Output disable / output floating tOHZ Unit 85 — 45 ns 10 — 5 35 0 t RC Supplement Address Description Bit name ∗ mark Empty bit and unwriteable Recognized as “0” while reading 10-hour digit (b5) Only for 24H mode t AA t OH OE VOL VOL t OE Under-sec. counter Read only (unwriteable) Used as binary code data Under-sec. alarm register Used as binary code data Sec.to year Both counter and alarm register use BCD code Day of week Coded data is used EX: 0…Sunday 1…Monday 4…Thursday 5…Friday t OH t OLZ CS t OHZ t OHZ VOL VOL t ACS t CHZ DOUT 2…Tuesday 3…Wednesday 6…Saturday Data valid Write mode Item Symbol Min. Write cycle time tWC 85 Chip select time tCW Address valid time tAW Note: Do not enter erroneous data for clock. This may result in time keeping error. Block diagram H • START / STOP Min. tRC Read cycle time ∗1 Be sure to enter “O” to TEST bit. OSC 32.768 KHZ Symbol 16 KHz 8 KHz 4 KHz 2 KHz 1 KHz 512 Hz 256 Hz 128 Hz 64 Hz 32 Hz 16 Hz 8 KHz 4 Hz 2 Hz 1 Hz 64 Hz register / counter Sec. register / counter Min. register / counter Hour register / counter Alarm comparison circuit Day-of-week register / counter Day register / counter Month register / counter Year register / counter 64 Hz alarm. register Sec. alarm. register 1 Hz 75 Address setup time tAS 0 Write pulse time tWP 60 Address holding time ___ WE output floating tWR 10 tWHZ 0 Input data set time tDW 40 Input data hold time tDH Output disable / output floating ___ WE output set time Max. Unit — ns 35 — 0 tOHZ 35 5 tOW — IRQ t WC Min. alarm. register Address Hour alarm. register Day-of-week alarm. register t W-R Day alarm. register Control register A OE t CW Control register B CS Write t AS t AW Read WE t OHZ Bus interface circuit DOUT t WP t DW I/0 1 to I/0 3 Data bus A 0 to A 3 Address bus CS OE t DH WE DIN 70