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参数资料
| 型号： | M48T212AMH |
| 厂商： | 意法半导体 |
| 英文描述： | 3.3V TIMEKEEPER CONTROLLER |
| 中文描述： | 3.3计时控制器 |
| 文件页数： | 4/20页 |
| 文件大小： | 165K |
| 代理商： | M48T212AMH |
M48T212A
4/20
Figure 3. Hardware Hookup
Note: 1. See description in Power Supply Decoupling and Undershoot Protection.
2. Traces connecting E1
CON
and E2
CON
to external SRAM should be as short as possible.
AI03049
A0-A3
DQ0-DQ7
A
VCC
W
G
WDI
RSTIN1
RSTIN2
VCAP
E
VCC
A0-Axx
0.1
μ
F
0.1
μ
F
3.3V
E2CON
RST
IRQ/FT
M48T212A
CMOS
SRAM
VOUT
E1CON
Note 2
MOTOROLA
MTD20P06HDL
VCCSW
1N5817
(1)
EX
E
A0-A18
E
VCC
CMOS
SRAM
VSS
SuperCap Supply
A0-Axx
X0
XI
32 kHz
Crystal
Figure 4. AC Testing Load Circuit
(3,4)
Note: 1. DQ0-DQ7
2. E1
CON
and E2
CON
3. Excluding open-drain output pins
AI03239
CL = 100pF or 5pF
(1)
CL = 30 pF
(2)
645
DEVICE
UNDER
TEST
1.75V
CL includes JIG capacitance
Table 5. AC Measurement Conditions
Note that Output Hi-Z is defined as the point where data
is no longer driven.
Input Rise and Fall Times
≤
5ns
Input Pulse Voltages
0 to 3V
Input and Output Timing Ref. Voltages
1.5V
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