MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 251

• Manufacturer Part Number: MM912H634DM1AER2
• Description: 16-bit Microcontrollers - MCU 64KS12 LIN2XLS/HS ISENSE
• Manufacturer: Freescale Semiconductor

Specifications of MM912H634DM1AER2

• Rohs: yes
• Core: HCS12
• Processor Series: MM912F634
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 2 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 5.5 V to 18 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-48
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 15
• Interface Type: SPI
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 15
• Number Of Timers: 1
• Program Memory Type: Flash
• Supply Voltage - Max: 18 V
• Supply Voltage - Min: 5.5 V

Functional Description and Application Information
4.32.3.2.7
Table 332. 9S12I32PIMV1 Test Register 1(CRGTEST1)
This register is reserved for factory test. This register is not writable.
Read: Anytime
4.32.4
4.32.4.1
An example of startup of clock system from Reset is given in
Freescale Semiconductor
0x003B
Reset
W
R
System
Reset
IR
Clock
IR
TRIM
load trim
from Flash
DCO
Clock
LOCKST
MULT
CPU
Write: Not Possible Functional Description
During startup from Reset DCO Clock is the Core Clock and, divided by 2, the Bus Clock.
IR Clock = Internal Reference Clock
Startup from Reset
U
U
7
9S12I32PIMV1 Test Register 1 (CRGTEST1)
reset state
$1FF
f
DCO_MIN
$00
U
U
6
Figure 73. Example for Startup of Clock System After Reset
flash trim value, e.g. $100
U
U
5
f
IREF_TRIM
vector fetch, program execution
f
= 32 kHz
DCO
U
U
4
Figure
t
STAB
increasing
73.
$4E2=1250, 32kHz*1250 = 40 MHz
S12S Clocks and Reset Generator (S12SCRGV1)
U
U
3
U
U
2
f
U
U
1
DCO
= 40 MHz
MM912F634
U
U
0
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