MC908JL16CFJER Freescale Semiconductor, MC908JL16CFJER Datasheet - Page 124

• Manufacturer Part Number: MC908JL16CFJER
• Description: IC MCU 8BIT 16K FLASH 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908JL16CFJER

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 26
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Controller Family/series: HC08
• No. Of I/o's: 26
• Ram Memory Size: 512Byte
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Digital Ic Case Style: LQFP
• Rohs Compliant: Yes
• Processor Series: HC08JL
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SCI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 26
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, DEMO908JL16E, M68CBL05CE
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 13 Channel
• For Use With: DEMO908JL16E - BOARD DEMO FOR MC908JL16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: MC908JL16CFJERTR

Analog-to-Digital Converter (ADC)
9.3 Functional Description
The ADC10 uses successive approximation to convert the input sample taken from ADVIN to a digital
representation. The approximation is taken and then rounded to the nearest 10- or 8-bit value to provide
greater accuracy and to provide a more robust mechanism for achieving the ideal code-transition voltage.
Figure 9-2
For proper conversion, the voltage on ADVIN must fall between V
or exceeds V
a 8-bit representation. If ADVIN is equal to or less than V
Input voltages between V
The ADC10 can perform an analog-to-digital conversion on one of the software selectable channels. The
output of the input multiplexer (ADVIN) is converted by a successive approximation algorithm into a 10-bit
digital result. When the conversion is completed, the result is placed in the data registers (ADRH and
ADRL). In 8-bit mode, the result is rounded to 8 bits and placed in ADRL. The conversion complete flag
is then set and an interrupt is generated if the interrupt has been enabled.
124
MCU STOP
ADHWT
V
V
REFH
REFL
AD0
ADn
shows a block diagram of the ADC10.
REFH
, the converter circuit converts the signal to $3FF for a 10-bit representation or $FF for
Input voltage must not exceed the analog supply voltages.
1
ADVIN
REFH
ADCSC
2
and V
CONTROL SEQUENCER
Figure 9-2. ADC10 Block Diagram
MC68HC908JL16 Data Sheet, Rev. 1.1
DATA REGISTERS ADRH:ADRL
REFL
SAR CONVERTER
are straight-line linear conversions.
NOTE
ADCK
ADCLK
CLOCK
DIVIDE
REFL
, the converter circuit converts it to $000.
COCO
AIEN
REFH
1
2
ACLK
ACLKEN
and V
REFL
BUS CLOCK
ALTERNATE CLOCK SOURCE
GENERATOR
ASYNC
CLOCK
. If ADVIN is equal to
Freescale Semiconductor
INTERRUPT