S912XEP768J5MAGR Freescale Semiconductor, S912XEP768J5MAGR Datasheet - Page 515

• Manufacturer Part Number: S912XEP768J5MAGR
• Description: 16-bit Microcontrollers - MCU 16-bit 768K Flash
• Manufacturer: Freescale Semiconductor

Specifications of S912XEP768J5MAGR

• Rohs: yes
• Core: HCS12X
• Processor Series: MC9S12
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 768 KB
• Data Ram Size: 48 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.3 V to 5 V
• Operating Temperature Range: - 40 C to + 125 C
• Package / Case: LQFP-144
• Mounting Style: SMD/SMT

13.3.2.6
Writes to this register will abort current conversion sequence and start a new conversion sequence. If
external trigger is enabled (ETRIGE=1) an initial write to ATDCTL5 is required to allow starting of a
conversion sequence which will then occur on each trigger event. Start of conversion means the beginning
of the sampling phase.
Read: Anytime
Write: Anytime
Freescale Semiconductor
Module Base + 0x0005
SMP[2:0]
PRS[4:0]
Reset
Field
7–5
4–0
W
R
Sample Time Select — These three bits select the length of the sample time in units of ATD conversion clock
cycles. Note that the ATD conversion clock period is itself a function of the prescaler value (bits PRS4-0).
Table 13-14
ATD Clock Prescaler — These 5 bits are the binary prescaler value PRS. The ATD conversion clock frequency
is calculated as follows:
Refer to Device Specification for allowed frequency range of f
ATD Control Register 5 (ATDCTL5)
0
0
7
lists the available sample time lengths.
f ATDCLK
SMP2
SC
0
6
0
0
0
0
1
1
1
1
Figure 13-8. ATD Control Register 5 (ATDCTL5)
MC9S12XE-Family Reference Manual Rev. 1.25
Table 13-13. ATDCTL4 Field Descriptions
=
------------------------------------ -
2
SMP1
SCAN
×
Table 13-14. Sample Time Select
(
0
0
1
1
0
0
1
1
0
f BUS
5
PRS
+
1
)
SMP0
MULT
0
1
0
1
0
1
0
1
0
4
Description
ATD Clock Cycles
Chapter 13 Analog-to-Digital Converter (ADC12B16CV1)
CD
0
3
Sample Time
in Number of
ATDCLK
10
12
16
20
24
4
6
8
.
CC
0
2
CB
0
1
CA
0
0
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