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參數(shù)資料
| 型號(hào)： | HT25LC512 |
| 廠(chǎng)商： | Holtek Semiconductor Inc. |
| 英文描述： | CMOS 64Kx8-Bit SPI Serial OTP EPROM |
| 中文描述： | 的CMOS 64Kx8位檢察官辦公室的SPI串行存儲(chǔ)器 |
| 文件頁(yè)數(shù)： | 5/11頁(yè) |
| 文件大?。?/td> | 153K |
| 代理商： | HT25LC512 |
HT25LC512
Rev. 1.10
5
October 17, 2005
Status register read
Status register format
Bit Sequential
0
1
2
3
4
5
6
7
Bit Data
0
0
1
1
0
0
0
1
The data in the status register will always be 8CH.
To read the status register, the bit sequence is
shown below. After the last bit of the opcode is
shifted in, the eight bits of the status register, start-
ingwiththeMSB(bit7),willbeshiftedoutontheSO
pin during the next eight clock cycles. After bit 0 of
the status register has been shifted out, the se-
quence will repeat itself (as long as CS remains low
and SCK is being toggled) starting again with bit 7.
Status register read
Bit sequence is shown as follows:
Bit Sequential
0
1
2
3
4
5
6
7
Bit Data
0
0
0
0
x
1
0
1
Note: x don t care
Product ID read
The RDID instruction allows the user to read the man-
ufacturer and product ID of the device. The first byte
after the instruction will be the manufacture code
(1CH= HOLTEK), followed by the device code (83H
for 512K OTP ROM).
Product ID read, bit sequence is shown as follows:
Bit Sequential
0
1
2
3
4
5
6
7
Bit Data
0
0
0
1
x
1
0
1
Note: x: don t care
HOLD
The HOLD pin is used in conjunction with the CS pin
to select the HT25LC512. When the device is se-
lected and a serial sequence is underway, HOLD can
be used to pause the serial communication with the
master device without resetting the serial sequence.
Topause,theHOLDpinmustbebroughtlowwhilethe
SCK pin is low. To resume serial communication, the
HOLD pin is brought high while the SCK pin is low
(SCK may still toggle during HOLD). Inputs to the SI
pin will be ignored while the SO pin is in the high im-
pedance state.
Power-on State
When power is first applied to the device, the SO pin will
be in a high-impedance state, and a high-to-low transi-
tion on the CS pin will be required to start a valid instruc-
tion. The SPI mode will be automatically selected on
every falling edge of CS by sampling the inactive clock
state.
Programming the OTP ROM
Programming the OTP ROM of the HT25LC512 via the
SI (Serial Input) pin requires the following sequence. Af-
ter the CS line is pulled low to select a device, the pro-
gramming instruction is transmitted via the SI line
followed by the byte address to the program. Then the
programming data are transmitted following the ad-
dress. If only one byte is to be programmed, the CS line
should be driven high after one byte data has been
transmitted. The programming instruction can be con-
tinued since the byte address is automatically incre-
mented and data will continue to be shifted in. When the
highest address is reached, the address counter will roll
overtothelowestaddressallowingtheentirememoryto
be programmed in one continuous programming in-
struction.
Programming the OTP ROM, bit sequence is shown as follows:
Bit Sequential
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Bit Data
1
0
0
1
1
0
0
1
A23
A22
A21
A20
A19
A18
A17
A16
Bit Sequential
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Bit Data
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT25LC512_04 | 制造商:HOLTEK 制造商全稱(chēng):Holtek Semiconductor Inc 功能描述:CMOS 64K!8-Bit SPI Serial OTP EPROM |
| HT-260NB | 制造商:Harvatek Corporation 功能描述:LED Uni-Color Blue 468nm 2-Pin SMD T/R 制造商:HARVATEK CORPORATION 功能描述:Blue 3.2 x 1.2 x 1.1 mm 90 mcd 3.3 V InGaN Surface Mount CHIP LED 制造商:HARVATEK CORPORATION 功能描述:PCB BLUE REV MOUNT top view 20 |
| HT-260NB5 | 制造商:Harvatek Corporation 功能描述:PN may be NE DW |
| HT-260NB-5063 | 制造商:Harvatek Corporation 功能描述: |
| HT-260NB5-2855 | 制造商:Harvatek Corp 功能描述:Electronic Component |
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