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參數(shù)資料
| 型號(hào)： | CAT28F102NA-12T |
| 元件分類(lèi)： | PROM |
| 英文描述： | 64K X 16 FLASH 12V PROM, 120 ns, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 5/15頁(yè) |
| 文件大小： | 107K |
| 代理商： | CAT28F102NA-12T |
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CAT28F102
13
Doc. No. 1014, Rev. A
Abort/Reset
An Abort/Reset command is available to allow the user
to safely abort an erase or program sequence. Two
consecutive program cycles with XXFFH on the data
bus will abort an erase or a program operation. The
abort/reset operation can interrupt at any time in a
program or erase operation and the device is reset to the
Read Mode.
DATA PROTECTION
1. Power Supply Voltage
When the power supply voltage (VCC) is less than 2.5V,
the device ignores WE signal.
2. Write Inhibit
When CE and OE are terminated to the low level, write
mode is not set.
Figure 10. Alternate A.C. Timing for Program Operation
ADDRESSES
WE (E)
OE (G)
CE (W)
DATA (I/O)
VCC
VPP
tWC
tRC
tAVEL
tELAX
tWLEL
tEHQZ
tDF
tGHEL
tEHEL
tEHEH
tEHGL
tELEH
HIGH-Z
DATA IN
= XX40H
DATA IN
= XXC0H
VALID
DATA OUT
tEHDX
tOLZ
tOE
tOH
tLZ
tCE
tVPEL
VPPH
VPPL
0V
5.0V
VCC POWER-UP
& STANDBY
SETUP PROGRAM
COMMAND
LATCH ADDRESS
& DATA
PROGRAMMING
PROGRAM
VERIFY
COMMAND
PROGRAM
VERIFICATION
VCC POWER-DOWN/
STANDBY
tWLEL
tEHWH
tELEH
tDVEH
tEHDX
POWER UP/DOWN PROTECTION
The CAT28F102 offers protection against inadvertent
programming during VPP and VCC power transitions.
When powering up the device there is no power-on
sequencing necessary. In other words, VPP and VCC
may power up in any order. Additionally VPP may be
hardwired to VPPH independent of the state of VCC and
any power up/down cycling. The internal command
register of the CAT28F102 is reset to the Read Mode on
power up.
POWER SUPPLY DECOUPLING
To reduce the effect of transient power supply voltage
spikes, it is good practice to use a 0.1
F ceramic
capacitor between VCC and VSS and VPP and VSS. These
high-frequency capacitors should be placed as close as
possible to the device for optimum decoupling.
Main Menu
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