MC9S08QG8CDNE Freescale Semiconductor, MC9S08QG8CDNE Datasheet - Page 134
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MC9S08QG8CDNE
Manufacturer Part Number
MC9S08QG8CDNE
Description
IC MCU 8K FLASH 8MHZ 8-SOIC
Manufacturer
Freescale Semiconductor
Series
HCS08r
Datasheet
1.MC9S08QG8CDTER.pdf
(314 pages)
Specifications of MC9S08QG8CDNE
Core Processor
HCS08
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
4
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Processor Series
S08QG
Core
HCS08
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SCI/SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Number Of Timers
1
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWS08
Development Tools By Supplier
DEMO9S08QG8E
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
For Use With
DEMO9S08QG8E - BOARD DEMO FOR MC9S08QG8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Analog-to-Digital Converter (S08ADC10V1)
9.4.4.2
A conversion is completed when the result of the conversion is transferred into the data result registers,
ADCRH and ADCRL. This is indicated by the setting of COCO. An interrupt is generated if AIEN is high
at the time that COCO is set.
A blocking mechanism prevents a new result from overwriting previous data in ADCRH and ADCRL if
the previous data is in the process of being read while in 10-bit MODE (the ADCRH register has been read
but the ADCRL register has not). When blocking is active, the data transfer is blocked, COCO is not set,
and the new result is lost. In the case of single conversions with the compare function enabled and the
compare condition false, blocking has no effect and ADC operation is terminated. In all other cases of
operation, when a data transfer is blocked, another conversion is initiated regardless of the state of ADCO
(single or continuous conversions enabled).
If single conversions are enabled, the blocking mechanism could result in several discarded conversions
and excess power consumption. To avoid this issue, the data registers must not be read after initiating a
single conversion until the conversion completes.
9.4.4.3
Any conversion in progress will be aborted when:
When a conversion is aborted, the contents of the data registers, ADCRH and ADCRL, are not altered but
continue to be the values transferred after the completion of the last successful conversion. In the case that
the conversion was aborted by a reset, ADCRH and ADCRL return to their reset states.
9.4.4.4
The ADC module remains in its idle state until a conversion is initiated. If ADACK is selected as the
conversion clock source, the ADACK clock generator is also enabled.
Power consumption when active can be reduced by setting ADLPC. This results in a lower maximum
value for f
9.4.4.5
The total conversion time depends on the sample time (as determined by ADLSMP), the MCU bus
frequency, the conversion mode (8-bit or 10-bit), and the frequency of the conversion clock (
the module becomes active, sampling of the input begins. ADLSMP is used to select between short and
long sample times.When sampling is complete, the converter is isolated from the input channel and a
successive approximation algorithm is performed to determine the digital value of the analog signal. The
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A write to ADCSC1 occurs (the current conversion will be aborted and a new conversion will be
initiated, if ADCH are not all 1s).
A write to ADCSC2, ADCCFG, ADCCVH, or ADCCVL occurs. This indicates a mode of
operation change has occurred and the current conversion is therefore invalid.
The MCU is reset.
The MCU enters stop mode with ADACK not enabled.
ADCK
Completing Conversions
Aborting Conversions
Power Control
Total Conversion Time
(see the electrical specifications).
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
Freescale Semiconductor
f
ADCK
). After
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