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參數(shù)資料
| 型號(hào)： | HCS370TP |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | KEELOQ Code Hopping Encoder |
| 中文描述： | 而Keeloq跳碼編碼器 |
| 文件頁數(shù)： | 6/36頁 |
| 文件大?。?/td> | 518K |
| 代理商： | HCS370TP |
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HCS370
DS41111D-page 6
Preliminary
2002 Microchip Technology Inc.
If the device is in the transmit process and detects that
a new button is pressed, the current code word will be
aborted, a new code word will be transmitted and the
time-out counter will RESET. If all the buttons are
released, a minimum number of code words will still be
completed. The minimum code words can be set to 1,
2, 4, or 8 using the Minimum Code Words (MTX) con-
figuration option. If the time for transmitting the mini-
mum code words is longer than the time-out time, the
device will not complete the minimum code words.
The HCS370 has an onboard nonvolatile EEPROM.
This EEPROM is used to store user programmable
data and the synchronization counter. The data is pro-
grammed at the time of production and includes the
security related information such as encoder keys,
serial numbers, discrimination values, and seed val-
ues. All the security related options are read protected.
The initial counter value is also programmed at the time
of production. From then on the device maintains the
counter itself. The HCS370 has built in redundancy for
counter protection and can recover from counter cor-
ruption.
The counter will not increment if the previous write was
corrupted by low voltage RESET or power failure dur-
ing T
PLL
. Instead, the counter will revert back to the
previous count and the HCS370 will attempt to correct
the bad bits. This will continue on every button press
until the voltage increases and the counter is success-
fully corrected.
FIGURE 2-2:
I/O CIRCUITS
FIGURE 2-3:
I/O CIRCUITS (CONTINUED)
DATA, RFEN
STEP
Outputs
N
P
Figure 2-2(D)
V
IN
Figure 2-2(E)
+
-
1.2V
V
DD
S0, S1, S2
S3, S4, SHIFT
Inputs
Z
IN
Figure 2-3(A)
LED Output
LED
Figure 2-3(C)
V
DD
LED
Weak
S5/SLEEP
Z
IN
V
DD
S5
P
N
SOEN
Figure 2-3(B)
N
P
N
SLEEP
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCS370TSL | KEELOQ Code Hopping Encoder |
| HCS370TST | KEELOQ Code Hopping Encoder |
| HCS374HMSR | Radiation Hardened Octal D-Type Flip-Flop, Three-State, Positive Edge Triggered |
| HCS374MS | Radiation Hardened Octal D-Type Flip-Flop, Three-State, Positive Edge Triggered(三態(tài),正邊沿觸發(fā),抗輻射八D觸發(fā)器) |
| HCS374D | Radiation Hardened Octal D-Type Flip-Flop, Three-State, Positive Edge Triggered |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCS370TSL | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS370TST | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ Code Hopping Encoder |
| HCS373DMSR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit D-Type Latch |
| HCS373DTR | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened Octal Transparent Latch, Three-State |
| HCS373KMSR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit D-Type Latch |
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