MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 125

• Manufacturer Part Number: MC56F8257MLH
• Description: DSC 64K FLASH 60MHZ 64-LQFP
• Manufacturer: Freescale Semiconductor
• Series: 56F8xxxr

Specifications of MC56F8257MLH

• Core Processor: 56800E
• Core Size: 16-Bit
• Speed: 60MHz
• Connectivity: CAN, I²C, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 16
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x12b, D/A 1x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 64-LQFP
• Product: DSCs
• Processor Series: 56800E
• Core: 56800E
• Device Million Instructions Per Second: 60 MIPs
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 54
• Data Ram Size: 8 KB
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

4.2.1 Voltage Reference DAC Control Register (REFx_DACCTRL)
Addresses: REFA_DACCTRL – F240h base + 0h offset = F240h
4.3
4.3.1 Operation
A 32-to-1 multiplexer selects an output voltage from 1 of 32 distinct levels that are
generated from a 32-tap resistor ladder network. The Reference DAC control register
(DACCTRL) enables the selection of the output voltage level and of the resistor ladder
network's supply reference source. When the module is disabled, its output, DACO,
should be equal to (is connected to) V
to the positive input 0 of one of the comparators.
Freescale Semiconductor
Reset
Read
Write
Bit
Reserved
Reserved
Reserved
DACEN
VOSEL
15–8
Field
4–0
7
6
5
Functional Description
15
0
REFB_DACCTRL – F250h base + 0h offset = F250h
REFC_DACCTRL – F260h base + 0h offset = F260h
14
0
This read-only bitfield is reserved and always has the value zero.
DAC Enable
This bit is used to enable the module. When the module is disabled, the module is powered down to
conserve power.
0
1
This read-only bit is reserved and always has the value zero.
This read-only bit is reserved and always has the value zero.
DAC Output Voltage Select
This bitfield selects an output voltage from one of 32 distinct levels: DACO = (V
where the DACO range is from V
DAC is disabled (powered down) and output is Vssa
DAC is operational
13
0
12
0
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
0
REFx_DACCTRL field descriptions
11
0
Chapter 4 5-Bit Voltage Reference Digital-to-Analog Converter (VREF_DAC)
10
0
DDA
SSA
0
9
/32 to V
Preliminary
. The Reference DAC output is internally routed
0
8
DDA
Description
.
0
7
0
0
6
0
0
5
0
4
DDA
0
3
/32)×(VOSEL[4:0] +1),
VOSEL
0
2
0
1
0
0
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