DS1284QN Maxim Integrated Products, DS1284QN Datasheet - Page 10

• Manufacturer Part Number: DS1284QN
• Description: IC TIMEKEEPER WATCHDG IND 28PLCC
• Manufacturer: Maxim Integrated Products
• Type: Watchdog Timerr

Specifications of DS1284QN

• Memory Size: 50B
• Time Format: HH:MM:SS:hh (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-LCC, 28-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

CAPACITANCE
(T
AC ELECTRICAL CHARACTERISTICS
(V
Input Capacitance
Output Capacitance
Input/Output Capacitance
Read Cycle Time
Address Access Time
CE Access Time
OE Access Time
OE or CE to Output Active
Output High-Z from Deselect
Output Hold from Address Change
Write Cycle Time
Write Pulse Width
Address Setup Time
Write Recovery Time
Output High-Z from WE
Output Active from WE
Data Setup Time
Data Hold Time
INTA, INTB Pulse Width
A
CC
= +25°C)
= 4.5V to 5.5V, T
PARAMETER
PARAMETER
A
= -40C to +85C or 0°C to +70°C.)
SYMBOL
SYMBOL
C
t
t
t
C
t
t
C
t
t
t
t
t
t
ODW
OEW
t
t
t
t
ACC
COE
t
IPW
WC
AW
WR
OUT
OD
OH
WP
DH
RC
CO
OE
DS
I/O
IN
10 of 18
MIN
MIN
150
150
140
10
10
10
10
45
0
0
3
TYP
TYP
7
7
7
MAX
MAX
10
10
10
150
150
60
60
50
UNITS
UNITS
ms
pF
pF
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS1284/DS1286
NOTES
NOTES
11,12
4,5
1
3
4