IC MCU 8BIT 3MHZ 52-PLCC

MC68HC11E0CFNE3

Manufacturer Part NumberMC68HC11E0CFNE3
DescriptionIC MCU 8BIT 3MHZ 52-PLCC
ManufacturerFreescale Semiconductor
SeriesHC11
MC68HC11E0CFNE3 datasheets
 


Specifications of MC68HC11E0CFNE3

Core ProcessorHC11Core Size8-Bit
Speed3MHzConnectivitySCI, SPI
PeripheralsPOR, WDTNumber Of I /o38
Program Memory TypeROMlessRam Size512 x 8
Voltage - Supply (vcc/vdd)4.5 V ~ 5.5 VData ConvertersA/D 8x8b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case52-PLCCController Family/series68HC11
No. Of I/o's38Ram Memory Size512Byte
Cpu Speed3MHzNo. Of Timers1
Embedded Interface TypeSCI, SPIDigital Ic Case StyleLCC
Rohs CompliantYesProcessor SeriesHC11E
CoreHC11Data Bus Width8 bit
Data Ram Size512 BInterface TypeSCI, SPI
Maximum Clock Frequency3 MHzNumber Of Programmable I/os38
Number Of Timers8Maximum Operating Temperature+ 85 C
Mounting StyleSMD/SMTMinimum Operating Temperature- 40 C
On-chip Adc8 bit, 8 ChannelLead Free Status / RoHS StatusLead free / RoHS Compliant
Eeprom Size-Program Memory Size-
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Freescale Semiconductor, Inc.
NF — Noise Error Flag
NF is set if majority sample logic detects anything other than a unanimous decision.
Clear NF by reading SCSR with NF set and then reading SCDR.
0 = Unanimous decision
1 = Noise detected
FE — Framing Error
FE is set when a 0 is detected where a stop bit was expected. Clear the FE flag by
reading SCSR with FE set and then reading SCDR.
0 = Stop bit detected
1 = 0 detected
7.6.5 Baud Rate Register (BAUD)
Use this register to select different baud rates for the SCI system. The SCP[1:0] bits
function as a prescaler for the SCR[2:0] bits. Together, these five bits provide multiple
baud rate combinations for a given crystal frequency. Normally, this register is written
once during initialization. The prescaler is set to its fastest rate by default out of reset,
and can be changed at any time. Refer to Table 7-1 and Table 7-2 for normal baud
rate selections.
BAUD — Baud Rate
Bit 7
6
TCLR
0
RESET:
0
0
TCLR — Clear Baud Rate Counters (Test)
RCKB — SCI Baud Rate Clock Check (Test)
SCP1, SCP0 — SCI Baud Rate Prescaler Selects
These two bits select a prescale factor for the SCI baud rate generator that determines
the highest possible baud rate.
Table 7-1 Baud Rate Prescale Selects
SCP[1:0]
Internal Clock
0 0
0 1
1 0
1 1
SCR[2:0] — SCI Baud Rate Selects
These three bits select receiver and transmitter bit rate based on output from baud rate
prescaler stage.
SERIAL COMMUNICATIONS INTERFACE
7-8
For More Information On This Product,
5
4
3
SCP1
SCP0
RCKB
0
0
0
Divide
Crystal Frequency in MHz
4.0 MHz
8.0 MHz
10.0 MHz
By
(Baud)
(Baud)
(Baud)
1
62.50 K
125.0 K
156.25 K
3
20.83 K
41.67 K
52.08 K
4
15.625 K
31.25 K
38.4 K
13
4800
9600
12.02 K
Go to: www.freescale.com
$002B
2
1
Bit 0
SCR2
SCR1
SCR0
U
U
U
12.0 MHz
(Baud)
187.5 K
62.5 K
46.88 K
14.42 K
TECHNICAL DATA