FM31256 データシートの表示（PDF） - Cypress Semiconductor
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FM31256 Datasheet PDF : 27 Pages
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Pin Configuration
CNT1
1
CNT2
2
A0
3
A1
4
CAL/PFO
5
RST
6
VSS
7
14
VDD
13
SCL
12
SDA
11
X2
10
X1
9
PFI
8
VBAK
FM31256/3164 Processor Companion
Pin Name
CNT1, CNT2
A0, A1
CAL/PFO
/RST
PFI
X1, X2
SDA
SCL
VBAK
VDD
VSS
Function
Event Counter Inputs
Device Select inputs
Clock Calibration and Early
Power-Fail Output
Reset Input/Output
Early Power-fail Input
1External Crystal Connections
Serial Data
Serial Clock
Battery-Backup Supply
Supply Voltage
Ground
Ordering Information
Base Configuration Memory Size
FM31256
256Kb
256Kb
FM3164
64Kb
64Kb
Operating Voltage
2.7-5.5V
2.7-5.5V
2.7-5.5V
2.7-5.5V
Reset Threshold
2.6V, 2.9, 3.9, 4.4V
2.6V, 2.9, 3.9, 4.4V
2.6V, 2.9, 3.9, 4.4V
2.6V, 2.9, 3.9, 4.4V
Ordering Part Number
FM31256-G
FM31256-GTR (tape&reel)
FM3164-G
FM3164-GTR (tape&reel)
Document Number: 001-86391 Rev. *B
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