MM912H634CV1AER2 Freescale Semiconductor, MM912H634CV1AER2 Datasheet - Page 258

• Manufacturer Part Number: MM912H634CV1AER2
• Description: 64KS12 LIN2xLS/HS Isense
• Manufacturer: Freescale Semiconductor
• Series: -r

Specifications of MM912H634CV1AER2

• Applications: Automotive
• Core Processor: HCS12
• Program Memory Type: FLASH (64 kB)
• Controller Series: HCS12
• Ram Size: 6K x 8
• Interface: LIN
• Number Of I /o: -
• Voltage - Supply: 5.5 V ~ 27 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Read: Anytime
Write: Anytime if APIFE=0. Else writes have no effect.
The period can be calculated as follows depending on logical value of the APICLK bit:
4.38.3.2.18
Freescale Semiconductor
APIR[15:0]
Field
15-0
APICLK=0: Period = 2*(APIR[15:0] + 1) * f
APICLK=1: Period = 2*(APIR[15:0] + 1) * Bus Clock period
Autonomous Periodical Interrupt Rate Bits — These bits define the time-out period of the API. See
the effect of the autonomous periodical interrupt rate bits.
1
Reserved Register CPMUTEST3
This reserved register is designed for factory test purposes only, and is not intended for
general user access. Writing to this register when in Special mode can alter the S12CPMU’s
functionality.
When f
APICLK
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
ACLK
Table 371. Selectable Autonomous Periodical Interrupt Periods
is trimmed to 10KHz.
Table 370. CPMUAPIRH / CPMUAPIRL Field Descriptions
APIR[15:0]
MM912_634 Advance Information, Rev. 4.0
FFFD
FFFE
FFFF
FFFD
FFFE
FFFF
0000
0001
0002
0003
0004
0005
0000
0001
0002
0003
0004
0005
.....
.....
ACLK
NOTE
Description
131068 * Bus Clock period
131070 * Bus Clock period
131072 * Bus Clock period
10 * Bus Clock period
12 * Bus Clock period
2 * Bus Clock period
4 * Bus Clock period
6 * Bus Clock period
8 * Bus Clock period
Selected Period
13106.8 ms
13107.0 ms
13107.2 ms
0.2 ms
0.4 ms
0.6 ms
0.8 ms
1.0 ms
1.2 ms
.....
.....
1
1
1
1
1
1
1
1
1
Table 371
for details of
258