MC908LJ12CFBE Freescale Semiconductor, MC908LJ12CFBE Datasheet - Page 292
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MC908LJ12CFBE
Manufacturer Part Number
MC908LJ12CFBE
Description
IC MCU 12K FLASH 8MHZ 52-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC98LJ12CFUE.pdf
(414 pages)
Specifications of MC908LJ12CFBE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
IRSCI, SPI
Peripherals
LCD, LVD, POR, PWM
Number Of I /o
20
Program Memory Size
12KB (12K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-LQFP
Processor Series
HC08LJ
Core
HC08
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SCI/SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
32
Number Of Timers
4
Operating Supply Voltage
3.3 V, 5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, M68EML08LJLKE, ZK-HC08LX-A, M68CBL05CE
Minimum Operating Temperature
- 40 C
On-chip Adc
6-ch x 10-bit
Controller Family/series
HC08
No. Of I/o's
20
Ram Memory Size
512Byte
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
SCI, SPI
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Serial Peripheral Interface Module (SPI)
14.13.3 SPSCK (Serial Clock)
14.13.4 SS (Slave Select)
Technical Data
292
NOTE:
The serial clock synchronizes data transmission between master and
slave devices. In a master MCU, the SPSCK pin is the clock output. In a
slave MCU, the SPSCK pin is the clock input. In full-duplex operation,
the master and slave MCUs exchange a byte of data in eight serial clock
cycles.
When enabled, the SPI controls data direction of the SPSCK pin
regardless of the state of the data direction register of the shared I/O
port.
The SS pin has various functions depending on the current state of the
SPI. For an SPI configured as a slave, the SS is used to select a slave.
For CPHA = 0, the SS is used to define the start of a transmission. (See
14.6 Transmission
transmission, the SS must be toggled high and low between each byte
transmitted for the CPHA = 0 format. However, it can remain low
between transmissions for the CPHA = 1 format. See
When an SPI is configured as a slave, the SS pin is always configured
as an input. It cannot be used as a general-purpose I/O regardless of the
state of the MODFEN control bit. However, the MODFEN bit can still
prevent the state of the SS from creating a MODF error. (See
SPI Status and Control
A logic 1 voltage on the SS pin of a slave SPI puts the MISO pin in a high-
impedance state. The slave SPI ignores all incoming SPSCK clocks,
even if it was already in the middle of a transmission.
MASTER SS
MISO/MOSI
SLAVE SS
SLAVE SS
CPHA = 0
CPHA = 1
Serial Peripheral Interface Module (SPI)
Figure 14-12. CPHA/SS Timing
Formats.) Since it is used to indicate the start of a
BYTE 1
Register.)
BYTE 2
MC68HC908LJ12
Freescale Semiconductor
Figure
BYTE 3
14-12.
14.14.2
—
Rev. 2.1
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