MM912F634DV1AE Freescale Semiconductor, MM912F634DV1AE Datasheet - Page 275
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MM912F634DV1AE
Manufacturer Part Number
MM912F634DV1AE
Description
16-bit Microcontrollers - MCU DUAL LS/HS SWITCH W. LIN
Manufacturer
Freescale Semiconductor
Datasheet
1.MM912G634DV1AE.pdf
(338 pages)
Specifications of MM912F634DV1AE
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
4.5 V to 5.5 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
6
Number Of Timers
1
Program Memory Type
Flash
Supply Voltage - Max
5.5 V
Supply Voltage - Min
4.5 V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MM912F634DV1AE
Manufacturer:
FREESCALE
Quantity:
20 000
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Functional Description and Application Information
The security feature in the Flash module is described in
4.36.3.3.3
The FRSV0 register is reserved for factory testing.
Table 357. Flash Reserved0 Register (FRSV0)
All bits in the FRSV0 register read 0 and are not writable.
4.36.3.3.4
The FCNFG register enables the Flash interrupts and gates the security backdoor writes.
Table 358. Flash Configuration Register (FCNFG)
CBEIE, CCIE, and KEYACC bits are readable and writable, while all remaining bits read 0 and are not writable. KEYACC is only
writable if KEYEN is set to the enabled state (see
Table 359. FCNFG Field Descriptions
Freescale Semiconductor
0x0102
0x0103
Reset
Reset
KEYACC
W
W
CBEIE
R
R
Field
CCIE
7
6
5
CBEIE
Command Buffer Empty Interrupt Enable — The CBEIE bit enables an interrupt in case of an empty command buffer in the
Flash module.
0 Command buffer empty interrupt disabled.
1 An interrupt will be requested whenever the CBEIF flag (see
Command Complete Interrupt Enable — The CCIE bit enables an interrupt in case all commands have been completed in
the Flash module.
0 Command complete interrupt disabled.
1 An interrupt will be requested whenever the CCIF flag (see
Enable Security Key Writing
0 Writes to the Flash block are interpreted as the start of a command write sequence.
1 Writes to the Flash block are interpreted as keys to open the backdoor.
0
0
0
7
7
Flash Reserved0 Register (FRSV0)
Flash Configuration Register (FCNFG)
Flash array reads are allowed while KEYACC is set.
CCIE
0
0
0
6
6
KEYACC
5
0
0
5
0
Section 4.36.3.3.2, “Flash Security Register
Section 4.36.6, “Flash Module
NOTE
0
0
0
0
4
4
Description
Section 4.36.3.4, “Flash Status Register
Section 4.36.3.4, “Flash Status Register (FSTAT)"”)
0
0
0
0
3
3
32 kbyte Flash Module (S12SFTSR32KV1)
Security"”.
0
0
0
0
2
2
(FSEC)"”.
1
0
0
1
0
0
(FSTAT)"”) is set.
MM912F634
is set.
0
0
0
0
0
0
275
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