MC908GR48AVFAE Freescale Semiconductor, MC908GR48AVFAE Datasheet - Page 63

• Manufacturer Part Number: MC908GR48AVFAE
• Description: IC MCU 8BIT 48K FLASH 48-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908GR48AVFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 37
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

3.4 Monotonicity
The conversion process is monotonic and has no missing codes.
3.5 Interrupts
When the AIEN bit is set, the ADC module is capable of generating CPU interrupts after each ADC
conversion. A CPU interrupt is generated if the COCO bit is a 0. The COCO bit is not used as a conversion
complete flag when interrupts are enabled.
3.6 Low-Power Modes
The WAIT and STOP instruction can put the MCU in low power- consumption standby modes.
3.6.1 Wait Mode
The ADC continues normal operation during wait mode. Any enabled CPU interrupt request from the ADC
can bring the MCU out of wait mode. If the ADC is not required to bring the MCU out of wait mode, power
Freescale Semiconductor
Quantization error is affected when only the most significant eight bits are
used as a result. See
RESULT
003
002
001
000
8-BIT
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
RESULT
10-BIT
00B
00A
009
008
007
006
005
004
003
002
001
000
1/2
IDEAL 10-BIT CHARACTERISTIC
WITH QUANTIZATION = ±1/2
1 1/2
Figure 3-3. Bit Truncation Mode Error
IDEAL 8-BIT CHARACTERISTIC
WITH QUANTIZATION = ±1/2
1/2
2 1/2
Figure
3 1/2
4 1/2
3-3.
5 1/2
1 1/2
NOTE
6 1/2
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
INPUT VOLTAGE
REPRESENTED AS 10-BIT
INPUT VOLTAGE
REPRESENTED AS 8-BIT
10-BIT TRUNCATED
TO 8-BIT RESULT
Monotonicity
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