MC68HC908MR8CFA Freescale Semiconductor, MC68HC908MR8CFA Datasheet - Page 316

• Manufacturer Part Number: MC68HC908MR8CFA
• Description: IC MCU 8K FLASH 8MHZ PWM 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908MR8CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 16
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Analog-to-Digital Converter (ADC)
18.4.6 Monotonicity
18.5 Interrupts
Technical Data
316
NOTE:
is used when compatibility with 8-bit ADC designs are required. No
interlocking between ADRH and ADRL is present.
Quantization error is affected when only the most significant eight bits
are used as a result. See
The conversion process is monotonic and has no missing codes.
When the AIEN bit is set, the ADC module is capable of generating a
CPU interrupt after each ADC conversion. A CPU interrupt is generated
if the COCO bit is at logic 0. The COCO bit is not used as a conversion
complete flag when interrupts are enabled.
RESULT
003
002
001
000
8-BIT
RESULT
10-BIT
00B
00A
009
008
007
006
005
004
003
002
001
000
Analog-to-Digital Converter (ADC)
1/2
IDEAL 10-BIT CHARACTERISTIC
WITH QUANTIZATION = ±1/2
Figure 18-2. 8-Bit Truncation Mode Error
1 1/2
IDEAL8-BIT CHARACTERISTIC
WITH QUANTIZATION = ±1/2
1/2
2 1/2
3 1/2
Figure
4 1/2
5 1/2
1 1/2
6 1/2
18-2.
7 1/2
8 1/2
9 1/2
WHEN TRUNCATION IS USED,
ERROR FROM IDEAL 8 BIT = 3/8 LSB
DUE TO NON-IDEAL QUANTIZATION.
2 1/2
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
INPUT VOLTAGE
REPRESENTED AS 10-BIT
INPUT VOLTAGE
REPRESENTED AS 8-BIT
10-BIT TRUNCATED
TO 8-BIT RESULT