M48T18-150PC STMicroelectronics, M48T18-150PC Datasheet - Page 20

• Manufacturer Part Number: M48T18-150PC
• Description: IC, TIMEKEEPER, YY-MM-DD-dd, 8KX8, DIP28
• Manufacturer: STMicroelectronics

Specifications of M48T18-150PC

• Clock Format: HH
• Clock Ic Type: Timekeeper
• Memory Configuration: 8K X 8
• Supply Voltage Range: 4.5V To 5.5V
• Digital Ic Case Style: DIP
• No. Of Pins: 28
• Date Format: YY-MM-DD-dd
• Memory Size: 64Kbit
• Nvram Features: RTC, Internal Battery, XTAL
• Interface Type: Parallel
• Access Time: 150ns
• Memory Case Style: DIP
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DC and AC parameters
5
Note:
20/31
DC and AC parameters
This section summarizes the operating and measurement conditions, as well as the DC and
AC characteristics of the device. The parameters in the following DC and AC characteristic
tables are derived from tests performed under the measurement conditions listed in the
relevant tables. Designers should check that the operating conditions in their projects match
the measurement conditions when using the quoted parameters.
Table 7.
Output Hi-Z is defined as the point where data is no longer driven.
Figure 11. AC testing load circuit
Table 8.
1. Effective capacitance measured with power supply at 5 V; sampled only, not 100% tested.
2. At 25 °C, f = 1 MHz.
3. Outputs deselected.
Supply voltage (V
Ambient operating temperature (T
Load capacitance (C
Input rise and fall times
Input pulse voltages
Input and output timing ref. voltages
Symbol
C
C
IO
IN
(3)
Input capacitance
Input / output capacitance
Operating and AC measurement conditions
Capacitance
Parameter
CC
)
C L includes JIG capacitance
L
)
DEVICE
UNDER
TEST
Parameter
Doc ID 2411 Rev 10
1kΩ
A
)
(1)(2)
4.75 to 5.5
M48T08
0 to 70
0 to 3
5V
100
1.5
5
1.8kΩ
C L = 100pF
OUT
Min
-
-
M48T18/T08Y
M48T08, M48T08Y, M48T18
4.5 to 5.5
0 to 70
0 to 3
100
1.5
5
Max
10
10
Unit
Unit
°C
pF
ns
V
V
V
pF
pF
AI01019