MC68HC711E20CFS2 MOTOROLA [Motorola, Inc], MC68HC711E20CFS2 Datasheet - Page 27
MC68HC711E20CFS2
Manufacturer Part Number
MC68HC711E20CFS2
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC711E20CFS2.pdf
(268 pages)
- Current page: 27 of 268
- Download datasheet (4Mb)
1.4.7.1 V
1.4.8 STRA/AS
1.4.9 STRB/R/W
M68HC11E Family — Rev. 5
MOTOROLA
RL
and V
RH
The V
When the voltage on this pin is more than one MOS threshold (about 0.7 volts)
above the V
from this signal rather than the V
without V
removed and must remain low until V
These two inputs provide the reference voltages for the analog-to-digital (A/D)
converter circuitry:
For proper A/D converter operation:
The strobe A (STRA) and address strobe (AS) pin performs either of two separate
functions, depending on the operating mode:
AS can be used to demultiplex the address and data signals at port C. Refer to
Section 2. Operating Modes and On-Chip
The strobe B (STRB) and read/write (R/W) pin act as either an output strobe or as
a data bus direction indicator, depending on the operating mode.
In single-chip operating mode, STRB acts as a programmable strobe for
handshake with other parallel devices. Refer to
(I/O) Ports
In expanded multiplexed operating mode, R/W is used to indicate the direction of
transfers on the external data bus. A low on the R/W pin indicates data is being
written to the external data bus. A high on this pin indicates that a read cycle is in
progress. R/W stays low during consecutive data bus write cycles, such as a
double-byte store. It is possible for data to be driven out of port C, if internal read
visibility (IRV) is enabled and an internal address is read, even though R/W is in a
high-impedance state. Refer to
Memory
•
•
•
•
•
•
STBY
V
V
V
V
In single-chip mode, STRA performs an input handshake (strobe input)
function.
In the expanded multiplexed mode, AS provides an address strobe function.
Freescale Semiconductor, Inc.
RL
RH
RH
RL
For More Information On This Product,
DD
for more information about IRVNE (internal read visibility not E).
is the low reference, typically 0 Vdc.
and V
pin is used to input random-access memory (RAM) standby power.
is the high reference.
should be at least 3 Vdc greater than V
for further information.
DD
power applied to the MCU. Reset must be driven low before V
voltage, the internal RAM and part of the reset logic are powered
RH
Go to: www.freescale.com
should be between V
General Description
Section 2. Operating Modes and On-Chip
DD
input. This allows RAM contents to be retained
DD
has been restored to a valid level.
SS
and V
Memory.
Section 6. Parallel Input/Output
DD
RL
.
.
General Description
Pin Descriptions
Data Sheet
DD
is
27
Related parts for MC68HC711E20CFS2
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
APPENDIX A ELECTRICAL CHARACTERISTICS
Manufacturer:
FREESCALE [Freescale Semiconductor, Inc]
Datasheet:
Part Number:
Description:
Motorola, Inc [VOLTAGE REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
6367254 MOTOROLA SC (XSTRS/R F)
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
MC1494LMotorola, Inc [MONOLITHIC FOUR-QUADRANT MULTIPLIER]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MC1466LMotorola, Inc [PRECISION WIDE RANGE VOLTAGE AND CURRENT REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MC145532DWMotorola, Inc [ADPCM Transcoder]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Silicon Controlled Rectifiers
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF Power Field Effect Transistors N-Channel Enhancement-Mode Lateral MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTORS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
LATERAL N-CHANNEL BROADBAND RF POWER MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF LOW POWER TRANSISTOR NPN SILICON
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
PLASTIC SURFACE MOUNT ZENER DIODES 1.5 WATTS 3.3-68 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
OVERVOLTAGE TRANSIENT SUPPRESSOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
TMOS POWER FET 15 AMPERES 60 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet: