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CDP68HC68S1 PDF даташит

Спецификация CDP68HC68S1 изготовлена ​​​​«Intersil Corporation» и имеет функцию, называемую «Serial Multiplexed Bus Interface».

Детали детали

Номер произв CDP68HC68S1
Описание Serial Multiplexed Bus Interface
Производители Intersil Corporation
логотип Intersil Corporation логотип 

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CDP68HC68S1 Даташит, Описание, Даташиты
CDP68HC68S1
April 1994
Serial Multiplexed Bus Interface
Features
• Differential Bus for Minimal EMl
• High Common Mode Noise Rejection
• Ideal for Twisted Pair Wiring
• Data Collision Detection
• Bus Arbitration
• Idle Detection
• Programmable Clock Divider
• Power-On Reset
Ordering Information
PART
NUMBER
CDP68HC68S1E
CDP68HC68S1M
TEMPERATURE
RANGE
PACKAGE
-40oC to +105oC 14 Lead PDIP
-40oC to +105oC 20 Lead SOIC (W)
Description
The CDP68HC6SS1 Serial Bus Interface Chip (SBlC) provides
a means of interfacing in a Small Area Network configuration,
various microcomputers (MCU’s) containing serial ports. Such
MCU’s include the family of 68HC05 microcontrollers. The SBlC
provides a connection from an MCU’s Serial Communication
Interface (asynchronous UART type interface) or Serial Periph-
eral Interface (synchronous) to a medium speed asynchronous
two wire differential signal bus designed to minimize electro-
magnetic interference. This two wire bus forms the network bus
to which all MCU’s are connected (through SBI chips). See Fig-
ure 1. Each MCU operates independently and may be added or
deleted from the bus with little or no impact on bus operation.
Such a bus is ideal for inter-microcomputer communication in
hazardous electrical environments such as automobiles, aircraft
or industrial control systems.
In addition to acting as bus arbitor and interface for microcom-
puter SCI port to differential bus communication, the
CDP68HC68S1 contains all the circuitry required to convert
and synchronize Non-Return-to-Zero (NRZ) 8-bit data received
on the differential bus and clock the data into a microcomputer’s
SPl port. Likewise, data to be sent by a microcomputer’s SPI
port is converted to asynchronous format by appending start
and stop bits before transmitting to other microcomputers.
Refer to the data sheet for the CDP68HCO5C4 for additional
information regarding CDP68HCO5 microcomputers and their
Serial Communications and Serial Peripheral Interfaces.
The CDP68HC68S1 is supplied in a 14 lead dual-in-line plastic
package (E suffix), and in a 20 lead small outline plastic pack-
age (M suffix).
Operating voltage ranges from 4V to 7V and operating temper-
ature ranges from -40oC to +105oC.
Pinouts
CD68HC68S1 (PDIP)
TOP VIEW
CLK 1
A2
B3
MODE 4
BUS+ 5
BUS- 6
VSS 7
14 VDD
13 CONTROL
12 IDLE
11 CS
10 SCK
9 REC
8 XMIT
CD68HC68S1 (SOIC)
TOP VIEW
CLK 1
A2
B3
MODE 4
NC 5
NC 6
BUS+ 7
NC 8
BUS- 9
VSS 10
20 VDD
19 CONTROL
18 NC
17 IDLE
16 CS
15 SCK
14 NC
13 NC
12 REC
11 XMIT
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
407-727-9207 | Copyright © Intersil Corporation 1999
6-84
File Number 1918.3









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CDP68HC68S1 Даташит, Описание, Даташиты
Block Diagram
TO
FROM
MCU
SCK
XMIT
REC
CS
MODE
SPI/SCI
CONVERSION
CLOCK
DIVIDER
CLK A B
CDP68HC68S1
ARBITRATION
DETECTOR
COLLISION
DETECTOR
WORD COUNTER
AND
CLOCK
GENERATOR
IDLE
DETECTION
AND
CONTROL
CONTROL IDLE
BUS+
BUS-
TO OTHER
SBI CHIPS
6-85









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CDP68HC68S1 Даташит, Описание, Даташиты
Specifications CDP68HC68S1
Absolute Maximum Ratings
Thermal Information
Supply Voltage (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +7.0V
Input Voltage (VIN) . . . . . . . . . . . . . . . . . . VSS -0.3V to VDD+0.3VDC
DC Input Current (IIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±10mA
Thermal Resistance
θJA
Plastic DIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100oC/W
Plastic SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . 120oC/W
Storage Temperature Range (TSTG) . . . . . . . . . . . . -55oC to +125oC
Lead Temperature (Soldering 10s) . . . . . . . . . . . . . . . . . . . . +265oC
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Operating Conditions
Operating Temperature (TA) . . . . . . . . . . . . . . . . . . -40oC to +105oC DC Operating Voltage Range (VDD) . . . . . . . . . . . . . . . . +4V to +7V
DC Electrical Specifications TA = -40oC to +105oC Unless Otherwise Noted. External Bias (VO) shall be 1.8V to 3.13V Unless
Otherwise Noted.
PARAMETERS
SYMBOLS
TEST CONDITIONS
MIN
MAX
UNITS
SIGNAL I/O SECTION
Output Voltage High Level
Output Voltage Low Level
Input Voltage Low Level
Input Voltage High Level
Output High Drive (Source) Current
(REC Pin)
VOL
VOH
VIL
VIH
IOH
Open Circuit
Open Circuit
VOH = 4.6V, VDD = 5V
-
VDD-0.05
-
0.7VDD
-0.12
0.05
-
0.3VDD
-
-
VDC
VDC
VDC
VDC
mA
Output High Drive (Source) Current
(IDLE, Control Pins)
IOH VOH = 4.6V, VDD = 5V
-0.04
-
mA
Output Low Drive (Sink) Current
(IDLE, Control, REC)
IOL VOH = 0.4V, VDD = 5V
0.36 -
mA
DIFFERENTIAL TRANSCEIVER (SEE FIGURE 4) TRANSMITTER
BUS+
BUS-
IAOL - IBOL Match
Output Rise Time (BUS+)
Output Fall Time (BUS-)
Transition match (50% Point)
RECEIVER
IAOL
IAOH
IBOL
IBOH
IM
tR
tF
tM
VO = VDD/2, RL = 120
VO = VDD/2, RL = 120
VO = VDD/2, RL = 120
VO = VDD/2, RL = 120
VO = VDD/2, RL = 120,
VDD = 5V ±0.5V
VDD = 5V, CL = 25pF
VDD = 5V, CL = 25pF
VDD = 5V, CL = 25pF
2.75 -
-1.0 1.0
- -2.75
-1.0 1.0
-5
- 1.5
- 1.5
-50 50
mA
µA
mA
µA
%
µs
µs
ns
Differential Sensitivity
Hysteresis (Within VIDH, VIDL Limits)
Propagation Delay
Out of Range
Quiescent Device Current
Clock Speed
VIDH
VIDL
VH
tP
VAX
VMIN
IDD
fOP
VO = 2.5V, RL = 120, VDD = 5V
VO = 2.5V, RL = 120, VDD = 5V
VO = 2.5V, RL = 120, VDD = 5V
VIDH =120mV, VDD = 5V
VDD = 5V
VDD = 5V
VDD = 0V, VO = 2.5V
VDD = 5, RL = 120, CL = 25pF
-
20
20
-
3.8
-
-10
-
120
-
-
700
-
1.2
10
TBD
(Note)
mV
mV
mV
ns
V
V
µA
MHz
NOTE: Although 1MHz is generally used as an example throughout this datasheet, the maximum speed limit may be higher and depends
upon user’s noise tolerance requirements.
6-86










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