- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385398 > HT27C010 (Holtek Semiconductor Inc.) 128K x 8-Bit CMOS OTP EPROM(128K x 8位 CMOS一次可編程EPROM) PDF資料下載
參數(shù)資料
| 型號(hào)： | HT27C010 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | 128K x 8-Bit CMOS OTP EPROM(128K x 8位 CMOS一次可編程EPROM) |
| 中文描述： | 128K的× 8位檢察官辦公室的CMOS存儲(chǔ)器（128K的× 8位的CMOS一次可編程存儲(chǔ)器） |
| 文件頁(yè)數(shù)： | 6/11頁(yè) |
| 文件大?。?/td> | 285K |
| 代理商： | HT27C010 |
Functional Description
Programming of the HT27C010
When the HT27C010 is delivered, the chip has
all 1024K bits in the “ONE ”, or HIGH state.
“ZE R Os” are loaded into the H T 27C010
through programming.
T he programming mode is entered when
12.5
±
0.2V is applied to the VPP pin, OE is at V
IH
,
and CE and PGM are V
IL
. For programming, the
data to be programmed is applied with 8 bits in
parallel to the data pins.
T he programming flowchart in F igure 3
shows the fast interactive programming algo-
rithm. The interactive algorithm reduces pro-
gramming time by using 30
μ
s to 105
μ
s
programming pulses and giving each address
only as many pulses as is necessary in order to
reliably program the data. After each pulse is
applied to a given address, the data in that
address is verified. If the data is not verified,
additional pulses are given until it is verified
or until the maximum number of pulses is
reached while sequencing through each ad-
dress of the HT27C010. This process is re-
peated while sequencing through each address
of the HT27C010. This part of the program-
ming algorithm is done at V
CC
=6.0V to assure
that each E PROM bit is programmed to a suf-
ficiently high threshold voltage. This ensures
that all bits have sufficient margin. After the
final address is completed, the entire E PROM
memory is read at V
CC
=V
PP
=5.25
±
0.25V to ver-
ify the entire memory.
Program inhibit mode
Programming of multiple HT27C010 in parallel
with different data is also easily accomplished by
using the Program Inhibit Mode. Except for CE,
all like inputs of the parallel HT27C010 may be
common. A TTL low-level program pulse applied to
an HT27C010 CE input with Vpp=12.5
±
0.2V, PGM
LOW, and OE HIGH will program that HT27C010.
A high-level CE input inhibits the HT27C010 from
being programmed.
Program verify mode
Verification should be performed on the pro-
grammed bits to determine whether they were
correctly programmed. The verification should
be performed with OE and CE at V
IL
, PGM at
V
IH
, and VPP at its programming voltage.
Auto product identification
The Auto Product Identification mode allows
the reading out of a binary code from an
E PROM that will identify its manufacturer and
the type. This mode is intended for program-
ming to automatically match the device to be
programmed with its corresponding program-
ming algorithm. This mode is functional in the
25
°
C
±
5
°
C ambient temperature range that is
required when programming the HT27C010.
To activate this mode, the programming equip-
ment must force 12.0
±
0.5V on the address line A9
of the HT27C010. Two identifier bytes may then
be sequenced from the device outputs by toggling
address line A0 from V
IL
to V
IH
, when A1=V
IH
. All
other address lines must be held at V
IH
during
Auto Product Identification mode.
Byte 0 (A0=V
IL
) represents the manufacturer
code, and byte 1 (A0=V
IH
), the device code. For
HT27C010, these two identifier bytes are given in
the Operation mode truth table. All identifiers for
the manufacturer and device codes will possess
odd parity, with the MSB (DQ7) defined as the
parity bit. When A1=V
IL
, the HT27C010 will read
out the binary code of 7F, continuation code, to
signify the unavailability of manufacturer ID
codes.
Read mode
The HT27C010 has two control functions, both
of which must be logically satisfied in order to
obtain data at outputs. Chip E nable (CE ) is the
power control and should be used for device
selection. Output E nable (OE ) is the output
control and should be used to gate data to the
output pins, independent of device selection.
Assuming that addresses are stable, address
access time (t
ACC
) is equal to the delay from CE
HT27C010
6
6th May ’99
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HT27C020 | OTP CMOS 256Kx 8-Bit EPROM |
| HT27C040 | 512K x 8-Bit CMOS OTP EPROM(512K x 8位 CMOS一次可編程EPROM) |
| HT27C512 | OTP CMOS 64Kx 8-Bit EPROM |
| HT27LC010 | CMOS 128K X 8-Bit OTP EPROM |
| HT27LC020 | OTP CMOS 256Kx 8-Bit EPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT27C010-120(32DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EPROM |
| HT27C010-120(32PLCC) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EPROM |
| HT27C010-120(32SOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EPROM |
| HT27C010-70(32DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EPROM |
| HT27C010-70(32PLCC) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EPROM |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。