MC68HC711E20CFN2 Freescale Semiconductor, MC68HC711E20CFN2 Datasheet - Page 152

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MC68HC711E20CFN2

Manufacturer Part Number
MC68HC711E20CFN2
Description
IC MCU 20K 2MHZ OTP 52-PLCC
Manufacturer
Freescale Semiconductor
Series
HC11r
Datasheets

Specifications of MC68HC711E20CFN2

Core Processor
HC11
Core Size
8-Bit
Speed
2MHz
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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Serial Communications Interface (SCI)
7.8 SCI Registers
7.8.1 Serial Communications Data Register
Technical Data
152
Address:
Five addressable registers are associated with the SCI:
The SCI registers are the same for all M68HC11 E-series devices with
one exception. The SCI system for MC68HC(7)11E20 contains an extra
bit in the BAUD register that provides a greater selection of baud
prescaler rates. Refer to
Figure
SCDR is a parallel register that performs two functions:
Reads access the receive data buffer and writes access the transmit
data buffer. Receive and transmit are double buffered.
Reset:
Read:
Write:
Figure 7-3. Serial Communications Data Register (SCDR)
Four control and status registers:
– Serial communications control register 1 (SCCR1)
– Serial communications control register 2 (SCCR2)
– Baud rate register (BAUD)
– Serial communications status register (SCSR)
One data register:
– Serial communications data register (SCDR)
The receive data register when it is read
The transmit data register when it is written
7-9.
Serial Communications Interface (SCI)
$102F
R7/T7
Bit 7
R6/T6
6
R5/T5
7.8.5 Baud Rate
5
Indeterminate after reset
R4/T4
4
R3/T3
Register,
3
M68HC11E Family — Rev. 3.2
R2/T2
2
Figure
R1/T1
1
7-8, and
MOTOROLA
R0/T0
Bit 0

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