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參數資料
| 型號： | FM31256-S |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Integrated Processor Companion with Memory |
| 中文描述： | 綜合處理器與記憶體伴侶 |
| 文件頁數： | 19/22頁 |
| 文件大?。?/td> | 286K |
| 代理商： | FM31256-S |
7.
The minimum V
DD
to guarantee the level of /RST remains a valid V
OL
level.
8.
Full complete operation. Supervisory circuits, RTC, etc operate to lower voltages as specified.
9.
Includes /RST input detection of external reset condition to trigger driving of /RST signal by FM31xxx.
10.
The VBAK trickle charger automatically regulates the maximum voltage on this pin for capacitor backup applications.
11.
VBAK will source current when trickle charge is enabled (VBC bit=1), V
DD
> V
BAK
, and V
BAK
< V
BAK
max.
AC Parameters
(T
A
= -40
°
C to + 85
°
C, V
DD
= 2.7V to 5.5V, C
L
= 100 pF unless otherwise specified)
Symbol Parameter
Min
f
SCL
SCL Clock Frequency
0
t
LOW
Clock Low Period
4.7
t
HIGH
Clock High Period
4.0
t
AA
SCL Low to SDA Data Out Valid
FM3104/16/64/256
Rev 0.2
May 2003
Page 19 of 22
Max
100
3
Min
0
1.3
0.6
Max
400
0.9
Min
0
0.6
0.4
Max
1000
0.55
Units
kHz
μ
s
μ
s
μ
s
Notes
t
BUF
t
HD:STA
t
SU:STA
Bus Free Before New Transmission
Start Condition Hold Time
Start Condition Setup for Repeated
Start
Data In Hold Time
Data In Setup Time
Input Rise Time
Input Fall Time
Stop Condition Setup Time
Data Output Hold
(from SCL @ VIL)
Noise Suppression Time Constant
on SCL, SDA
All SCL specifications as well as start and stop conditions apply to both read and write operations.
Supervisor Timing
(T
A
= -40
°
C to + 85
°
C, V
DD
= 2.7V to 5.5V)
Symbol
Parameter
t
RPU
Reset active after V
DD
>V
TP
t
RNR
V
DD
< V
TP
noise immunity
t
VF
Fall time of VDD from V
TP
to 0V
t
VR
Rise time of VDD from 0V to VTP
t
WDP
Pulse Width of /RST for Watchdog Reset
t
WDOG
Timeout of Watchdog
f
CNT
Frequency of Event Counters
Data Retention
(T
A
= -40
°
C to + 85
°
C, V
DD
= 2.7V to 5.5V)
Parameter
Min
Data Retention
10
Capacitance
(T
A
= 25
°
C, f=1.0 MHz, V
DD
= 3.0V)
Symbol
Parameter
C
IO
Input/output capacitance
C
XTAL
X1, X2 Crystal pin capacitance
Notes
1
This parameter is characterized but not tested.
2
Slew rate for proper transition between the battery-backed and normal operation.
3
t
DOG
is the programmed time in register 0Ah, V
DD
> V
TP
and t
RPU
satisfied.
4
The crystal attached to the X1/X2 pins must be rated as 6pF.
4.7
4.0
4.7
1.3
0.6
0.6
0.5
0.25
0.25
μ
s
μ
s
μ
s
t
HD:DAT
t
SU:DAT
t
R
t
F
t
SU:STO
t
DH
t
SP
0
0
0
ns
ns
ns
ns
μ
s
ns
ns
250
4.0
0
100
0.6
0
100
0.25
0
1000
300
50
300
300
50
300
100
50
1
1
Min
100
10
100
100
100
t
DOG
0
Max
200
25
200
2*t
DOG
10
Units
ms
μ
s
μ
s
μ
s
ms
ms
MHz
Notes
1
1,2
1,2
3
Units
Years
Notes
Max
8
12
Units
pF
pF
Notes
1
1, 4
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FM31256-STR | 功能描述:監控電路 256K w/RTC Pwr Mon WDT Bat Sw PF RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| FM31272 | 制造商:RAMTRON 制造商全稱:RAMTRON 功能描述:5V Integrated Processor Companion with Memory |
| FM31272-G | 功能描述:F-RAM 4K w/RTC Pwr Mon WDT Bat Sw PF RoHS:否 存儲容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM31272-GTR | 功能描述:F-RAM 4K w/RTC Pwr Mon WDT Bat Sw PF RoHS:否 存儲容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM31274 | 制造商:RAMTRON 制造商全稱:RAMTRON 功能描述:5V Integrated Processor Companion with Memory |
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