RP5C15 RICOH Co.,Ltd., RP5C15 Datasheet

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RP5C15

Manufacturer Part Number
RP5C15
Description
Real time clock for microcomputers that can be connected directly to data buses of 16bit CPUs.
Manufacturer
RICOH Co.,Ltd.
Datasheet

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Part Number
Manufacturer
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Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
RP5C15
Manufacturer:
RICOH
Quantity:
3 215
Price:
RP/RF/RJ5C15
• Connected directly to CPU enabling fast access.
• 4bit address input : A0 - A3
• Built-in clock counter (hour, minute, second) and calendar counter (leap year, year, month, day, day-of-the-week)
• All clock data expressed in BCD codes
• Backed up by batteries (minimum : 2.0V)
• Selectable basic clock frequency : 16kHz, 1kHz, 128Hz, 16Hz, 1Hz, 1/60Hz.
• Outputs alarm signals or timing pulse of 16Hz or 1Hz.
• Supply voltage : Single power supply of +5V
• Packages RP5C15 ...... 18pin DIP
OUTLINE
16bit CPUs, such as the 8086, Z8000, and 68000, and of 8bit CPUs, such as the 8085A, Z80, 6809, and 6502. They
allow setting or reading of the clock with the same procedures as for the Read/Write operation for memory.
batteries.
FEATURES
BLOCK DIAGRAM
The RP/RF/RJ5C15 are real-time clocks for microcomputers that can be connected directly to data buses of
These products have various features including clock, calendar and alarm functions and can be backed up by
RF5C15 ...... 18pin SOP
RJ5C15 ...... 28pin PLCC
OSCOUT
OSCIN
CS
CS
WR
RD
OSC
CONTROLLER
CLOCK
HOLD
HOLD
1/2
ADJ
15
16
k
T.RESET
RD.WR.
H
SD
-SF
z
ALARM
RESET
RD. WR.
4
4
BANK 1
, 1
SECONDS MINUTES
1
/
S0
10
k
H
z
1
S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC
3 4
/
, 128H
6
SO
SF
4
A
1
0
ADDRESS
DECODER
/
10
A
S
3
3
ALARM REGISTER
2
1
1
z
COMPARATOR
/
A
, 16H
6
S
2
4
4
3
1
• 4bit bidirectional data bus : D0 - D3
A
/
HOURS
12
3
S
2
2
z
4
1
, 1H
/
24
S
CONTROL
3
3
D
5
REAL-TIME CLOCK
1
0
z
/
• CMOS technology
, 1/60H
7
BUS
D
S
4
4
6
1
1
/
D
DAYS
28
S
2
2
2
-
7
1
/
D
31
z
3
S
4
8
MONTHS
BANK 0. RD. WR.
1
/
1
12
SELECT
CLOCK
4
1
/
YEARS
10
ALARM
3
4
1
/
10
2
1
/
4
OUTPUT
CLOCK
1H
z
OUTPUT
ALARM
, 16H
CLKOUT
z
ALARM
NO. EK-086-9908
1

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RP5C15 Summary of contents

Page 1

... Backed up by batteries (minimum : 2.0V) • Selectable basic clock frequency : 16kHz, 1kHz, 128Hz, 16Hz, 1Hz, 1/60Hz. • Outputs alarm signals or timing pulse of 16Hz or 1Hz. • Supply voltage : Single power supply of +5V • Packages RP5C15 ...... 18pin DIP RF5C15 ...... 18pin SOP RJ5C15 ...... 28pin PLCC BLOCK DIAGRAM ...

Page 2

... RD 9 GND 10 WR 11,12,13, ALARM 16 OSCIN 17 OSCOUT Pin numbers shown are for the RP5C15 and the RF5C15. These are different for the RJ5C15. * For specific pin number see the “PIN CONFIGURATIONS”. 2 RF5C15 (18pin SOP) • OSCOUT CS 1 OSCIN ALARM CLKOUT 3 ...

Page 3

ABSOLUTE MAXIMUM RATINGS Symbol Item V Supply Voltage CC V Input Voltage I V Output Voltage O Pd Maximum Power Dissipation Topr Operating Temperature Tstg Storage Temperature Absolute Maximum ratings are threshold limit values that must not be exceeded even ...

Page 4

RP/RF/RJ5C15 DC ELECTRICAL CHARACTERISTICS Symbol Item “H” Input Voltage (excluding OSCIN “H” Input Voltage (OSCIN) “L” Input Voltage (excluding OSCIN “L” Input Voltage (OSCIN) V “H” Output Voltage OH V “L” Output Voltage OL I Input ...

Page 5

TIMING CHART Read Cycle • CS Write Cycle • CS Valid ...

Page 6

RP/RF/RJ5C15 ADDRESS MAPPING MODE Description 0 1-second counter 1 10-second counter 2 1-minute counter 3 10-minute counter 4 1-hour counter 5 10-hour counter 6 Day-of-the-week counter 7 1-day counter 8 10-day counter 9 1-month counter A 10-month ...

Page 7

ADJ (BANK1, Address 1h Bit for correcting the second digit. When set For digits ranging from Resets the lower-order counter than the 1-second counter and sets the second 2) ...

Page 8

RP/RF/RJ5C15 OSCILLATOR CIRCUIT Since this circuit includes an output ballast resistor (=70k), no external device is necessary. RP/RF/RJ5C15 ) Values of C and C are for reference only the RJ5C15, the OSCIN is 26pin and ...

Page 9

... PACKAGE DIMENSIONS • RP5C15 (18pin DIP) 24.8max. 0.976max 1.5typ. 0.059typ. 2.54 0.100 • RF5C15 (18pin SOP) 11.71max. 0.461max 0.775max. 0.031max. 1.27 0.050 0.41 0.1 0.016 0.004 10 9 0.46 +0.15 –0.1 0.25 ( 0.010 ) M 0.018 +0.006 –0.004 10 9 0.12 ( 0.005 ) 0.12 ( 0.005 ) M RP/RF/RJ5C15 7 ...

Page 10

RP/RF/RJ5C15 • RJ5C15 (24pin PLCC) 11.48typ. 0.452typ. 12.45 +0.12 –0.13 0.490 0.005 0.254 0.010 0.10 ( 0.004 ) 0.050 10.67 +0.25 –0.76 0.420 +0.01 –0.03 10 Pin No.1 0.737 0.076 0.029 0.003 1.27 0.432 0.10 0.18 ( 0.007 ) M ...

Page 11

The products and the product specifications described in this document are subject to change or discontinuation of production without notice for reasons such as improvement. Therefore, before deciding to use the products, please refer to Ricoh sales representatives for ...

Page 12

RICOH COMPANY, LTD. ELECTRONIC DEVICES DIVISION HEADQUARTERS 13-1, Himemuro-cho, Ikeda City, Osaka 563-8501, JAPAN Phone +81-727-53-6003 Fax +81-727-53-2120 YOKOHAMA OFFICE (International Sales) 3-2-3, Shin-Yokohama, Kohoku-ku, Yokohama City, Kanagawa 222-8530, JAPAN Phone +81-45-477-1697 Fax +81-45-477-1694 • 1695 http://www.ricoh.co.jp/LSI/english/ RICOH CORPORATION ELECTRONIC ...

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