RP5C01A RICOH Co.,Ltd., RP5C01A Datasheet

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RP5C01A

Manufacturer Part Number
RP5C01A
Description
Real time clock with internal RAM.
Manufacturer
RICOH Co.,Ltd.
Datasheet
RP/RF5C01A
• Connected directly to CPU
• Built-in clock counter (hour, minute, second) and calendar counter (leap year, year, month, day, day-of-the-week)
• Supports both 12-hour AM/PM clock and 24-hour clock
• All clock data expressed in BCD codes
• Backed up by batteries (minimum:2.2V)
• Outputs alarm signals or timing pulse of 16Hz or 1Hz.
• Packages : 18pin DIP (RP5C01A) ; 18pin SOP(RF5C01A)
OUTLINE
puters with such CPUs as the 8085A or Z80 and allow setting or reading of the clock with the same procedures as
for the Read/Write operation for memory.
which can be backed up by batteries. They can then be used as non-volatile RAM.
FEATURES
BLOCK DIAGRAM
The RP/RF5C01A are real-time clocks for microcomputers that can be connected directly to buses of microcom-
These products have various features such as clock and calendar counters, alarm functions, and 26
OSCOUT
OSCIN
ADJ
WR
RD
CS
CS
OSC
CONTROLLER
CLOCK
HOLD
HOLD
ADJ
1/2
• 4bit bidirectional data bus : D0 - D3
15
T-RESET
SD
-SF
RD.WR.
MODE01
A-RESET
RD. WR.
MODE 00
4
4
SECONDS MINUTES
1
/
S0
10
3
1
S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC
/
6
SO
SF
• ±30 second adjustment function
A
4
4
0
• Built-in 26
1
/
ADDRESS
DECODER
10
A
S
3
3
ALARM REGISTER
1
2
1
A
/
COMPARATOR
6
2
S
4
4
3
A
1
/
HOURS
12
3
S
2
2
4
1
/
24
S
D
CONTROL
3
3
WITH INTERNAL RAM
5
0
1
´
/
D
7
BUS
1H
REAL-TIME CLOCK
S
4
4
1
6
4bits RAM
1
D
z
/
DAYS
28
,16H
S
2
2
2
-
7
1
D
/
31
3
S
z
4
8
,
MONTHS
1
/
1
12
INTERNAL
BUFFER
4
4
BUS
1
• 4bit address input : A0 - A3
/
YEARS
10
ALARM
4
1
/
10
2
1
/
SO-SC
4
26
RAM
´
4bits
RD.WR.
MODE10,MODE11
OUTPUT
ALARM
NO. EK-086-9804
ALARM
´
4bits RAM
1

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RP5C01A Summary of contents

Page 1

... Built-in clock counter (hour, minute, second) and calendar counter (leap year, year, month, day, day-of-the-week) • Supports both 12-hour AM/PM clock and 24-hour clock • All clock data expressed in BCD codes • Backed up by batteries (minimum:2.2V) • Outputs alarm signals or timing pulse of 16Hz or 1Hz. • Packages : 18pin DIP (RP5C01A) ; 18pin SOP(RF5C01A) BLOCK DIAGRAM OSCIN 15 OSC ...

Page 2

... RP/RF5C01A PIN CONFIGURATIONS RP5C01A • ADJ GND 9 10 PIN DESCRIPTION Pin No. Symbol 1,2 CS,CS 3 ADJ 4,5,6 GND 10 WR 11,12,13, ALARM 16,17 OSCIN,OSCOUT Vcc OSCOUT OSCIN CS ALARM ADJ GND The CS and CS are used to interface with external devices. Enabled when CS =“H” and CS=“ ...

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/RF5C01A AC ELECTRICAL CHARACTERISTICS Symbol Item t Address–RD/WR Delay Time RD/WR Pulse Width Address Effective Time after rising RD/WR t Data Delay Time after falling Data Hold Time after rising ...

Page 5

Read Cycle (CS=“H”) • The RP/RF5C01A accept RD signals only when CS=“L” and CS=“H” the case of WR signals. Thus, substitute RD signals ...

Page 6

RP/RF5C01A • MODE register (Address Dh Timer EN Alarm EN M1 ¯ When the Timer EN is set to 0, the 1-second counter and higher-order counters than the 1-second ...

Page 7

OSCILLATOR CIRCUIT • When the oscillator circuit configured using crystal oscillators: The oscillator circuit is configured as shown in Figure 1. External components include: a resistor, a capacitor and a trimmer capacitor for fine tuning of the ...

Page 8

... RP/RF5C01A PACKAGE DIMENSIONS • RP5C01A (18pin DIP • RP5C01A (18pin SOP) 11.63typ. 0.458typ 1.27typ. 0.050typ. 8 22.86max. 0.900max 1.3±0.35 0.051±0.014 0.48±0.10 0.25 ( 0.010 ) M 0.019±0.004 2.54 0.100 10 9 0.41 +0.1 –0.05 0.016 +0.004 –0.002 7.62 0.300 mm (Unit : ) inch 10.31±0.3 0.406± ...

Page 9

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 10

RICOH COMPANY, LTD. ELECTRONIC DEVICES DIVISION HEADQUARTERS 13-1, Himemuro-cho, Ikeda City, Osaka 563-8501, JAPAN Phone 81-727-53-1111 Fax 81-727-53-6011 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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