MC68HC711E20CFN4 Freescale Semiconductor, MC68HC711E20CFN4 Datasheet - Page 38
MC68HC711E20CFN4
Manufacturer Part Number
MC68HC711E20CFN4
Description
IC MCU 20K OTP 4MHZ 52-PLCC
Manufacturer
Freescale Semiconductor
Series
HC11r
Specifications of MC68HC711E20CFN4
Core Processor
HC11
Core Size
8-Bit
Speed
4MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
38
Program Memory Size
20KB (20K x 8)
Program Memory Type
OTP
Eeprom Size
512 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Pin Descriptions
2.10 V
2.11 STRA/AS
2.12 STRB/R/W
Technical Data
38
RL
and V
RH
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
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
Input/Output (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
•
•
•
•
•
•
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.
RL
RH
RH
RL
Section 4. Operating Modes and On-Chip
is the low reference, typically 0 Vdc.
and V
is the high reference.
should be at least 3 Vdc greater than V
RH
Pin Descriptions
should be between V
for further information.
SS
and V
M68HC11E Family — Rev. 3.2
Section 6. Parallel
DD
RL
.
.
Memory.
MOTOROLA
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