S1K50000 Epson Electronics America, Inc., S1K50000 Datasheet - Page 54
S1K50000
Manufacturer Part Number
S1K50000
Description
Design Guide S1k50000 Series
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.S1K50000.pdf
(131 pages)
- Current page: 54 of 131
- Download datasheet (2Mb)
3.4 Gated I/O Cells
3.4.1 Outline of Gated I/O Cells
3.4.2 Features of Gated I/O Cells
3.4.3 Precautions on the Use of Gated I/O Cells
STANDARD CELL S1K50000 SERIES
DESIGN GUIDE
Seiko Epson’s S1K50000 series of Gated I/O cells make it possible to provide input to pins in
the floating or Hi-Z state without the use of pull-up or pull-down circuits, an operation that was
conventionally impossible. They also make it possible to cut off the high-voltage-side (HV
power supply in a multi-power-supply design. Two types are available: one in which the power
supply is cut off when the control-signal level is high, and another in which the power supply is
cut off when the control-signal level is low, allowing the level for cutting off the power supply to
be chosen in accordance with the circuit design.
(1) Without limitations on the number of cells used or their placement, the Gated I/O cells can
(2) In a multi-power-supply design, the high-voltage-side (HV
(3) Inputs can be placed in the Hi-Z state without the use of pull-up or pull-down circuits.
(4) The supported input levels are the TTL level (when HV
(5) Two types are available: one in which the power supply is cut off when the control-signal
(6) Because the Gated I/O cells are entirely of a CMOS structure, they help to reduce the
(1) The Gated I/O cells cannot be subjected to Seiko Epson’s standard input-level
(2) When inputs are placed in the Hi-Z state using Gated I/O cells, the power supply must be
be positioned as desired by customers, providing freedom in circuit design.
However, because special measures are needed, if such a cut-off function is desired,
contact Seiko Epson or its distributor.
the LVTTL level (when HV
level is high, and another in which the power supply is cut off when the control-signal level
is low.
chip’s power consumption.
determination due to the circuit configuration. Therefore, if it is necessary for the input level
to be determined by a tester, a test circuit must be configured separately. For an example
of a test circuit, see Figure 3-6.
cut off through control of the Gated I/O cell before the pin inputs float to a Hi-Z state. If
inputs are placed in the Hi-Z state without the performance of this cut-off, a large current
flows into the LSI as with ordinary cells, causing the device to malfunction. The same
applies to the performance of connecting operations using control of the Gated I/O cell
while inputs are left floating. In such a case, the logic levels latched into the device’s
internal logic cannot be guaranteed. Before you cut off the power to the high-voltage side
(HV
this case.
DD
), first contact EPSON’s marketing division, as a special procedure is also required in
DD
and LV
Chapter 3: Types of Input/Output Buffers and Usage Precautions
DD
EPSON
= both 3.3 V; or V
DD
DD
DD
and LV
= 3.3 V).
) power supply can be cut off.
DD
= 5.0 V and 3.3 V) or
DD
49
)
Related parts for S1K50000
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Optical Devicepbs-prism For Blue
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
Optical Device Ir-cut Filter
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
Optical Device
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
S1d15000 Series Lcd Driver With Ram
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
S1d12000 Series Lcd Driver Ic Technical Manual Technical Manual
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
S1d13521 Epd Controller
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
S1d13710 Mobile Graphics Engine
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
S1d13711 Mobile Graphics Engine
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
Liquid Crystal Display =lcd Driver
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
Embedded Memory Graphics Lcd Controller
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
S1d13705 Embedded Memory Lcd Controller
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
S1d13503 Graphics Lcd Controller
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
Embedded Memory Graphics Lcd Controller
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
Interlace Progressive Conversion Ic
Manufacturer:
Epson Electronics America, Inc.
Datasheet:
Part Number:
Description:
Dual Camera Controller With Jpeg Encoder
Manufacturer:
Epson Electronics America, Inc.
Datasheet: