MC68HC711E9FU Freescale Semiconductor, MC68HC711E9FU Datasheet - Page 116

MC68HC711E9FU

Manufacturer Part Number
MC68HC711E9FU
Description
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC68HC711E9FU

Cpu Family
HC11
Device Core Size
8b
Frequency (max)
4MHz
Interface Type
SCI/SPI
Program Memory Type
EPROM
Program Memory Size
12KB
Total Internal Ram Size
512Byte
# I/os (max)
38
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
3V
On-chip Adc
8-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
64
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
Serial Communications Interface (SCI)
EXTAL
OSCILLATOR
CLOCK GENERATOR
XTAL
*SCP2 is present only on MC68HC(7)11E20.
Figure 7-9. MC68HC(7)11E20 SCI Baud Rate
7.8 Status Flags and Interrupts
The SCI transmitter has two status flags. These status flags can be read by software (polled) to tell when
the corresponding condition exists. Alternatively, a local interrupt enable bit can be set to enable each of
these status conditions to generate interrupt requests when the corresponding condition is present.
Status flags are automatically set by hardware logic conditions, but must be cleared by software, which
provides an interlock mechanism that enables logic to know when software has noticed the status
indication. The software clearing sequence for these flags is automatic. Functions that are normally
performed in response to the status flags also satisfy the conditions of the clearing sequence.
116
INTERNAL BUS CLOCK (PH2)
AND
(÷4)
÷
3
E
0:0:0
0:0:1
AS
SCR[2:0]
0:0:0
÷
0:0:1
2
÷
0:1:0
2
÷
0:1:1
2
÷
1:0:0
2
÷
1:0:1
2
÷
1:1:0
2
÷
1:1:1
2
Generator Block Diagram
M68HC11E Family Data Sheet, Rev. 5.1
÷
÷
÷
4
13
39
SCP[2:0]*
0:1:0
0:1:1
1:0:0
÷
16
SCI
TRANSMIT
BAUD RATE
(1X)
SCI
RECEIVE
BAUD RATE
(16X)
Freescale Semiconductor

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