MC9S08GT16CFB Freescale Semiconductor, MC9S08GT16CFB Datasheet - Page 232

• Manufacturer Part Number: MC9S08GT16CFB
• Manufacturer: Freescale Semiconductor

Specifications of MC9S08GT16CFB

• Cpu Family: HCS08
• Device Core Size: 8b
• Frequency (max): 20MHz
• Interface Type: SCI/SPI
• Program Memory Type: Flash
• Program Memory Size: 16KB
• Total Internal Ram Size: 1KB
• # I/os (max): 36
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 2.08V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

Analog-to-Digital Converter (ATD) Module
14.6.2
Writes to the ATD status and control register clears the CCF flag, cancels any pending interrupts, and
initiates a new conversion.
232
1
2
3
Maximum ATD conversion clock frequency is 2 MHz. The max bus clock frequency is computed from the max ATD conversion
clock frequency times the indicated prescaler setting; i.e., for a PRS of 0, max bus clock = 2 (max ATD conversion clock
frequency) × 2 (Factor) = 4 MHz.
Use these settings if the maximum desired ATD conversion clock frequency is 1 MHz. The max bus clock frequency is
computed from the max ATD conversion clock frequency times the indicated prescaler setting; i.e., for a PRS of 0, max bus
clock = 1 (max ATD conversion clock frequency) × 2 (Factor) = 2 MHz.
Minimum ATD conversion clock frequency is 500 kHz. The min bus clock frequency is computed from the min ATD conversion
clock frequency times the indicated prescaler setting; i.e., for a PRS of 1, min bus clock = 0.5 (min ATD conversion clock
frequency) × 2 (Factor) = 1 MHz.
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
PRS
ATD Status and Control (ATD1SC)
Factor = (PRS +1) × 2
Reset:
Read:
Write:
10
12
14
16
18
20
22
24
26
28
30
32
Figure 14-8. ATD Status and Control Register (ATD1SC)
2
4
6
8
Bit 7
CCF
0
= Unimplemented or Reserved
Table 14-4. Clock Prescaler Values
MC9S08GB/GT Data Sheet, Rev. 2.3
ATDIE
(2 MHz max ATD Clock)
6
0
Max Bus Clock
ATDCO
MHz
12
16
20
20
20
20
20
20
20
20
20
20
20
20
4
8
5
0
4
0
1
(1 MHz max ATD Clock)
Max Bus Clock
3
0
MHz
10
12
14
16
18
20
20
20
20
20
20
20
2
4
6
8
ATDCH
2
0
2
(500 kHz min ATD Clock)
Freescale Semiconductor
1
0
Min Bus Clock
MHz
Bit 0
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
1
3