MC908QL4MDT Freescale Semiconductor, MC908QL4MDT Datasheet - Page 135
MC908QL4MDT
Manufacturer Part Number
MC908QL4MDT
Description
IC MCU 8BIT 4K FLASH 16-TSSOP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908QL3VDTE.pdf
(226 pages)
Specifications of MC908QL4MDT
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
LIN (Local Interconnect Network)
Peripherals
LVD, POR, PWM
Number Of I /o
13
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
16-TSSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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14.3 Functional Description
The SLIC provides full standard LIN message buffering for a slave node, minimizing the need for CPU
intervention. Routine protocol functions (such as synchronization to the communication channel,
reception, and verification of header data) and generation of the checksum are handled automatically by
the SLIC. This allows application software to be greatly simplified relative to standard UART
implementations, as well as reducing the impact of interrupts needed in those applications to handle each
byte of a message independently.
Additionally, the SLIC has the ability to automatically synchronize to any LIN message, regardless of the
LIN bus bit rate (1–20 kbps), properly receiving that message without prior programming of the target LIN
bit rate. Furthermore, this can even be accomplished using an untrimmed internal oscillator, provided its
accuracy is at least ±50% of nominal.
The SLIC also has a simple UART-like byte transfer mode, which allows the user to send and receive
single bytes of data in half-duplex 8-N-1 format (8-bit data, no parity, 1 stop bit) without the need for LIN
message framing.
Freescale Semiconductor
MESSAGE BUFFER — 9 BYTES
SLCD7, SLCD6, SLCD5, SLCD4
SLCD3, SLCD2, SLCD1, SLCD0
BUS CLOCK
CONTROL REGISTERS
STATUS REGISTERS
Figure 14-2. SLIC Module Block Diagram
SLCID
MC68HC908QL4 Data Sheet, Rev. 8
PRESCALER (RXFP[1:0])
DIGITAL RX FILTER
SLIC CLOCK
LSVR AND LINIF
SHADOW REGISTER
LIN PROTOCOL STATE MACHINE
1 BYTE
SLCSVR CONTROL
DIGITAL RX FILTER
SLCRX
(PSM)
SLCTX
Functional Description
135
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