MC908QY8CDWE Freescale Semiconductor, MC908QY8CDWE Datasheet - Page 41

IC MCU 8BIT 8K FLASH 16-SOIC

MC908QY8CDWE

Manufacturer Part Number
MC908QY8CDWE
Description
IC MCU 8BIT 8K FLASH 16-SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC908QY8CDWE

Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LVD, POR, PWM
Number Of I /o
13
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
16-SOIC (0.300", 7.5mm Width)
Processor Series
HC08QY
Core
HC08
Data Bus Width
8 bit
Data Ram Size
256 B
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
13
Number Of Timers
2
Operating Supply Voltage
3 V to 5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, M68CBL05AE, DEMO908QB8, DEMO908QC16
Minimum Operating Temperature
- 40 C
On-chip Adc
4-ch x 10-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

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Part Number:
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Manufacturer:
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When a conversion is aborted, the contents of the data registers, ADRH and ADRL, 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, ADRH and ADRL return to their reset states.
Upon reset or when a conversion is otherwise aborted, the ADC10 module will enter a low power, inactive
state. In this state, all internal clocks and references are disabled. This state is entered asynchronously
and immediately upon aborting of a conversion.
3.3.3.4 Total Conversion Time
The total conversion time depends on many factors such as sample time, bus frequency, whether
ACLKEN is set, and synchronization time. The total conversion time is summarized in
The maximum total conversion time for a single conversion or the first conversion in continuous
conversion mode is determined by the clock source chosen and the divide ratio selected. The clock
source is selectable by the ADICLK and ACLKEN bits, and the divide ratio is specified by the ADIV bits.
For example, if the alternate clock source is 16 MHz and is selected as the input clock source, the input
clock divide-by-8 ratio is selected and the bus frequency is 4 MHz, then the conversion time for a single
10-bit conversion is:
Freescale Semiconductor
8-Bit Mode (short sample — ADLSMP = 0):
8-Bit Mode (long sample — ADLSMP = 1):
10-Bit Mode (short sample — ADLSMP = 0):
10-Bit Mode (long sample — ADLSMP = 1):
Single or 1st continuous
Single or 1st continuous
Subsequent continuous (f
Single or 1st continuous
Single or 1st continuous
Subsequent continuous (f
Single or 1st continuous
Single or 1st continuous
Subsequent continuous (f
Single or 1st continuous
Single or 1st continuous
Subsequent continuous (f
Maximum Conversion time =
The ADCK frequency must be between f
maximum to meet A/D specifications.
Table 3-1. Total Conversion Time versus Control Conditions
Conversion Mode
Number of bus cycles = 11.25 μs x 4 MHz = 45 cycles
Bus
Bus
Bus
Bus
≥ f
≥ f
≥ f
≥ f
MC68HC908QB8 Data Sheet, Rev. 3
ADCK
ADCK
ADCK
ADCK
)
)
)
)
21 ADCK cycles
16 MHz/8
NOTE
ACLKEN
ADCK
X
X
X
X
0
1
0
1
0
1
0
1
+
minimum and f
3 bus cycles
4 MHz
38 ADCK + 3 bus clock + 5 μs
21 ADCK + 3 bus clock + 5 μs
41 ADCK + 3 bus clock + 5 μs
18 ADCK + 3 bus clock + 5 μs
Maximum Conversion Time
18 ADCK + 3 bus clock
38 ADCK + 3 bus clock
21 ADCK + 3 bus clock
41 ADCK + 3 bus clock
ADCK
16 ADCK
36 ADCK
19 ADCK
39 ADCK
= 11.25 μs
Functional Description
Table
3-1.
41

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