mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 167

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

Chapter 9
Analog-to-Digital Converter (ADC12V1)
9.1
The 12-bit analog-to-digital converter (ADC) is a successive approximation ADC designed for operation
within an integrated microcontroller system-on-chip.
9.1.1
The bus clock to the ADC can be gated on and off using the SCGC1[ADC] bit (see
Power Management Status and Control 2 Register
enables the bus clock to this module. To conserve power, the SCGC1[ADC] bit can be cleared to disable
the clock to this module when not in use. See
9.1.2
This section provides information for configuring the ADC on this device.
9.1.2.1
The ADC channel assignments for this device are shown in
unknown value. Channels which are connected to an I/O pin have an associated pin control bit as shown.
Freescale Semiconductor
ADCH
00000
00001
00010
00011
00100
00101
00110
00111
01000
Channel
Introduction
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
ADC Clock Gating
Module Configurations
Channel Assignments
Ignore any references to stop1 low-power mode in this chapter, because this
device does not support it.
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
PTB0/AD1P0
PTB1/AD1P1
PTB2/AD1P2
PTB3/AD1P3
PTB4/AD1P4
PTB5/AD1P5
PTB6/AD1P6
PTB7/AD1P7
PTD0/AD1P8
Input
Table 9-1. ADC Channel Assignment
Pin Control
ADPC0
ADPC1
ADPC2
ADPC3
ADPC4
ADPC5
ADPC6
ADPC7
ADPC8
Section 5.8, “Peripheral Clock Gating,”
NOTE
(SPMSC2)”). This bit is set after any reset, which
ADCH
10000
10001
10010
10011
10100
10101
10110
10111
11000
Table
9-1. Reserved channels convert to an
Channel
AD16
AD17
AD18
AD19
AD20
AD21
AD22
AD23
AD24
PTG3/AD1P18
PTG4/AD1P19
PTH0/AD1P20
PTH1/AD1P21
PTH2/AD1P22
PTH3/AD1P23
PTA6/AD1P16
PTA7/AD1P17
Reserved
Section 5.9.8, “System
Input
for details.
Pin Control
ADPC16
ADPC17
ADPC18
ADPC19
ADPC20
ADPC21
ADPC22
ADPC23
N/A
9-1