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HI-8436 の電気的特性と機能

HI-8436のメーカーはHOLTICです、この部品の機能は「32-Channel Ground/Open or Supply/Open Low Threshold Sensor」です。


製品の詳細 ( Datasheet PDF )

部品番号 HI-8436
部品説明 32-Channel Ground/Open or Supply/Open Low Threshold Sensor
メーカ HOLTIC
ロゴ HOLTIC ロゴ 




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HI-8436 Datasheet, HI-8436 PDF,ピン配置, 機能
July 2016
HI-8436
32-Channel Ground/Open or Supply/Open
Low Threshold Sensor with SPI Interface
GENERAL DESCRIPTION
The HI-8436 is a 32-channel discrete-to-digital sensor
fabricated with Silicon-on-Insulator (SOI) technology
designed to interface with a Serial Peripheral Interface
(SPI).
Four banks of 8 sense inputs can be programmed as either
GND/Open or Supply/Open sensors. Supply/Open
sensing is also referred to as 28V/Open sensing.
All sense inputs are internally lightning protected to
DO160G, Section 22, Cat AZ, BZ and ZZ without external
components.
The sensing circuit window comparator thresholds are set
by programming the center threshold and hysteresis
registers to values from 0.4V to 5.2V. The digital values of
the sensed inputs can be read either one bank at a time or
all 4 banks with one command.
Each bank of sensors have a VWETn pin available for
application of a voltage to supply pull up current to the
GND/Open sensor.
Interface to the digital subsystem is simple CMOS logic
inputs and outputs. The logic pins are compatible with 3.3V
logic allowing direct connection to a wide range of
microcontrollers or FPGAs.
APPLICATION
· Avionics Discrete to Digital Sensing
PIN CONFIGURATIONS
VWET0 - 1
SENSE_0 - 2
SENSE_1 - 3
SENSE_2 - 4
SENSE_3 - 5
SENSE_4 - 6
SENSE_5 - 7
SENSE_6 - 8
SENSE_7 - 9
SENSE_8-10
SENSE_9-11
HI-8436PQI
HI-8436PQT
HI-8436PQM
33 - SENSE_27
32 - VWET3
31 - SENSE_26
30 - SENSE_25
29 - SENSE_24
28 - SENSE_23
27 - SENSE_22
26 - SENSE_21
25 - SENSE_20
24 - SENSE_19
23 - SENSE_18
44 Pin Plastic Quad Flat Pack (PQFP)
10mm x 10mm
FEATURES
· Robust CMOS Silicon-on-Insulator (SOI) technology
· 32-channel Programmable Sense Operation,
GND/Open or Supply/Open, 4 X 8 Input Sensors
· Programmable HI/LO Threshold and Hysteresis in
0.1V steps, from 0.4V to 5.2V.
· Single Low Voltage Supply Operation for low
thresholds applications.
· Logic Operation from 3.0V to 3.6V
· 20 MHz Serial Peripheral Interface (SPI)
· Lightning Protected Sense Inputs
· Internal Self-Test
VWET0 - 1
SENSE_0 - 2
SENSE_1 - 3
SENSE_2 - 4
SENSE_3 - 5
SENSE_4 - 6
SENSE_5 - 7
SENSE_6 - 8
SENSE_7 - 9
SENSE_8 -10
SENSE_9 -11
HI-8436PCI
HI-8436PCT
HI-8436PCM
33 - SENSE_27
32 - VWET3
31 - SENSE_26
30 - SENSE_25
29 - SENSE_24
28 - SENSE_23
27 - SENSE_22
26 - SENSE_21
25 - SENSE_20
24 - SENSE_19
23 - SENSE_18
44 Pin Plastic QFN
7mm x 7mm
(DS8436 Rev. D)
HOLT INTEGRATED CIRCUITS
www.holtic.com
07/16

1 Page





HI-8436 pdf, ピン配列
HI-8436
PIN DESCRIPTIONS
PIN FUNCTION
DESCRIPTION
VLOGIC
Supply
3.3V Power Supply for both sensors and logic.
VWET<0-3>
Supply
Inputs to supply current to sense lines in GND/Open operation. Each of the
4 banks of 8 inputs has a VWETn pin. 50kΩ to GND.
SENSE<31:0>
Discrete Input
4 banks of 8 discrete inputs programmable through the SPI to be either
GND/Open or Supply/Open.
The type of input is programmed by bank, PSEN<3:0> bits. “0” makes the
bank GND/Open sensors, “1” makes the bank SUPPLY/Open sensors
The status of the inputs SENSE<31:0> are stored in SO<31:0>
See SPI section for programming and reading sensors.
GND
Supply
0V Ground for Sensor and Logic.
SCK
Digital Input SPI Clock.
nCS Digital Input SPI Chip Select, Active Low, internal 30kΩ pull-up.
SI Digital Input SPI serial data input, internal 30kΩ pull-down.
SO Digital Output SPI serial data output.
nMR
Digital Input
SPI COMMANDS
Master Reset, Active Low, internal 30kΩ pull-up.
Table 1.
OP Code
R/W
# Data
Bytes
DESCRIPTION
0x02
W
1 Write Control Register
0x04
W
1 Write Program Sense Banks Register, PSEN<3:0>, to program SENSE Inputs
0x3A W
2 Write GND/Open Threshold Center Value and Hysteresis
0x3C W
2 Write Supply/Open Threshold Center Value and Hysteresis
0x1E W
1 Write Test Mode Data Register
0x82
R
1 Read Control Register
0x84
R
1 Read Program Sense Banks Register, to read programmed bank type
0xBA
R
2 Read GND/Open Threshold Center Value and Hysteresis
0xBC
0x9E
R
R
2 Read Supply/Open Threshold Center Value and Hysteresis
1 Read Test Mode Data Register
0x90
R
1 Read Bank 0, SOUT Register, SO<7:0>, status of SENSE<7:0> Inputs
0x92
R
1 Read Bank 1, SOUT Register, SO<15:8>, status of SENSE<15:8> Inputs
0x94
0x96
0xF8
R
R
R
1 Read Bank 2, SOUT Register, SO<23:16>, status of SENSE<23:16> Inputs
1 Read Bank 3, SOUT Register, SO<31:24>, status of SENSE<31:24> Inputs
4 Read All Banks, SOUT Register, SO<31:0>, status of SENSE<31:0> Inputs
Table 2.
HOLT INTEGRATED CIRCUITS
3


3Pages


HI-8436 電子部品, 半導体
HI-8436
REGISTER DESCRIPTIONS
CONTROL REGISTER : CTRL
Read: SPI Op-code 0x82
Write: SPI Op-code 0x02
Reset Value 00
[Opcode, DB0]
XXXXXX
76543210
MSB
LSB
DATA BYTE 0
Bit Name R/W Default Description
7-2 - R/W 0 Not Used.
1 SRST R/W 0
Software Reset - Setting this bit to “1” holds all other registers and the TEST bit to their reset
values. SRST bit must be written back to “0” to release this reset
0 TEST R/W 0
Setting this bit to “1” puts the HI-8436 in the self test mode. Input to sensors are internally set
according to the value of the TEST MODE DATA register
TABLE 3.
PROGRAM SENSE BANKS REGISTER: PSEN<3:0>
Read: SPI Op-code 0x84
Write: SPI Op-code 0x04
Reset Value 00
[Opcode, DB0]
XXXX
76543210
MSB
LSB
DATA BYTE 0
Bit Name R/W Default Description
7-4 - R/W 0 Not Used.
3-0 BANK3-0 R/W 0
Program Sensor type for SENSE Inputs.
Bank 0 programs inputs SENSE<7:0>
Bank 1 programs inputs SENSE<15:8>
Bank 2 programs inputs SENSE<23:16>
Bank 3 programs inputs SENSE<31:24>
Setting a bit to “0” programs the 8 inputs in the bank to be GND/Open sensors.
Setting a bit to “1” programs the 8 inputs in the bank to be Supply/Open sensors.
TABLE 4.
TEST MODE DATA REGISTER : TMDATA
Read: SPI Op-code 0x9E
Write: SPI Op-code 0x1E
Reset Value 00
[Opcode, DB0]
XXXX
76543210
MSB
DATA BYTE 0
Bit Name R/W Default Description
7-4 - R/W 0 Not Used.
3-0 TMDATA3-0 R/W 0
These 4 bits program the internal inputs to the sense comparators when in the test
mode.
ODD1 = 1
Odd inputs are set high
ODD0 = 1
Odd inputs are set low
ALL1 = 1
All inputs are set high
ALL0 = 1
All inputs are set low
Note: Only one mode can be selected. If more than one bit is high the inputs will all be set low.
TABLE 5.
HOLT INTEGRATED CIRCUITS
6

6 Page



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