參數(shù)資料
型號: HCS361-IP
廠商: Microchip Technology Inc.
英文描述: IC AC/DC CONV 5V 200MA SIP10
中文描述: 而Keeloq跳碼編碼器
文件頁數(shù): 13/24頁
文件大?。?/td> 343K
代理商: HCS361-IP
HCS361
1996 Microchip Technology Inc.
Preliminary
DS40146C-page 13
6.0
PROGRAMMING THE HCS361
When using the HCS361 in a system, the user will have
to program some parameters into the device including
the serial number and the secret key before it can be
used. The programming cycle allows the user to input
all 192 bits in a serial data stream, which are then
stored internally in EEPROM. Programming will be
initiated by forcing the PWM line high, after the S3 line
has been held high for the appropriate length of time.
S0 and S1 should be held low during the entire program
cycle (Table 6-1 and Figure 6-1). The device can then
be programmed by clocking in 16 bits at a time, followed
by the word’s complement using S3 or S2 as the clock
line and PWM as the data in line. After each 16-bit word
is loaded, a programming delay is required for the
internal program cycle to complete. An acknowledge bit
can be read back after the programming delay (T
WC
).
After the first word and its complement have been
downloaded, an automatic bulk write is performed. This
delay can take up to Twc. At the end of the program-
ming cycle, the device can be verified (Figure 6-2) by
reading back the EEPROM. Reading is done by clock-
ing the S3 line and reading the data bits on PWM. For
security reasons, it is not possible to execute a verify
function without first programming the EEPROM.
A
verify operation can only be done once, immedi-
ately following the program cycle
.
FIGURE 6-1:
PROGRAMMING WAVEFORMS
FIGURE 6-2:
VERIFY WAVEFORMS
End of
Programming Cycle
TABLE 6-1
PROGRAMMING/VERIFY TIMING REQUIREMENTS
V
DD
= 5.0V
±
10%
25
°
C
±
5
°
C
Parameter
Program mode setup time
Hold time 1
Programming delay
Clock low time
Clock high time
Data setup time
Data hold time
Data out valid time
Symbol
T
2
T
1
T
WC
T
CLKL
T
CLKH
T
DS
T
DH
T
DV
Min.
0
9.0
25
25
0
18
Max.
4.9
30
24
Units
ms
ms
ms
μ
s
μ
s
μ
s
μ
s
μ
s
PWM
(Data)
Enter Program
Mode
S2/S3
(Clock)
Bit 0
Bit 1
Bit 2
Bit 3
Bit 14 Bit 15
Bit 16 Bit 17
T
1
T
2
Repeat 12 times for each word
T
CLKH
T
CLKL
T
WC
T
DS
Data for Word 0 (KEY_0)
Data for Word 1
T
DH
Bit 0
Bit 1
Bit 2
Bit 3
Bit 14 Bit 15
Note 1:
Unused button inputs to be held to ground during the entire programming sequence.
2:
The V
DD
pin must be taken to ground after a program/verify cycle.
Acknowledge
PWM
(Data)
(Clock)
Note:
If a Verify operation is to be done, then it must immediately follow the Program cycle.
Begin Verify Cycle Here
Bit 1
Bit 2
Bit 3
Bit 15
Bit 14
Bit 16 Bit 17
Bit190 Bit191
T
WC
Data in Word 0
T
DV
S2/S3
Bit 0
Bit191
Bit190
相關(guān)PDF資料
PDF描述
HCS361-ISN IC CONV AC/DC -12V 90MA SIP9
HCS361-P IC CONV AC/DC -5V 100MA SIP9
HCS361-SN IC AC/DC CONV 12V 350MA SIP12
HCS365 KEELOQ Code Hopping Encoder
HCS365T KEELOQ Code Hopping Encoder
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HCS361-ISN 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ CODE HOPPING ENCODER
HCS361-P 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ CODE HOPPING ENCODER
HCS361-SN 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ CODE HOPPING ENCODER
HCS361T/SN 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-6.6V RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量(輸入/輸出):2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
HCS361T-I/SN 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-6.6V RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量(輸入/輸出):2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray