S912XEQ512J3CAGR Freescale Semiconductor, S912XEQ512J3CAGR Datasheet - Page 218
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S912XEQ512J3CAGR
Manufacturer Part Number
S912XEQ512J3CAGR
Description
16-bit Microcontrollers - MCU 16 BIT,512K FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.S912XEQ512J3CAGR.pdf
(1324 pages)
Specifications of S912XEQ512J3CAGR
Rohs
yes
Core
HCS12X
Data Bus Width
16 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
512 kB
Data Ram Size
32 kB
On-chip Adc
Yes
Package / Case
LQFP
Mounting Style
SMD/SMT
Interface Type
CAN/SCI/SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
119
Number Of Timers
25
Program Memory Type
Flash
Supply Voltage - Max
1.98 V, 2.9 V, 5.5 V
Supply Voltage - Min
1.72 V, 2.7 V, 3.13 V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S912XEQ512J3CAGR
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 3 Memory Mapping Control (S12XMMCV4)
3.4.4.1
The arbitration scheme allows only one master to be connected to a target at any given time. The following
rules apply when prioritizing accesses from different masters to the same target bus:
3.5
3.5.1
CALL and RTC instructions are uninterruptable CPU instructions that automate page switching in the
program page window. The CALL instruction is similar to the JSR instruction, but the subroutine that is
218
•
•
•
•
•
CPU always has priority over BDM and XGATE.
XGATE access to PRU registers constitutes a special case. It is always granted and stalls the CPU
for its duration.
XGATE has priority over BDM.
BDM has priority over CPU and XGATE when its access is stalled for more than 128 cycles. In the
later case the suspect master will be stalled after finishing the current operation and the BDM will
gain access to the bus.
In emulation modes all internal accesses are visible on the external bus as well and the external bus
is used during access to the PRU registers.
EBI
Initialization/Application Information
XGATE
CALL and RTC Instructions
XBUS3
Master Bus Prioritization regarding access conflicts on Target Buses
XGATE
XBUS1
FLASH
DBG
FTM
MC9S12XE-Family Reference Manual Rev. 1.25
Figure 3-23. MMC Block Diagram
MMC “Crossbar Switch”
EEE
XBUS0
CPU
S12X0
resources
BDM
BDM
S12X1
XSRAM
XRAM
Freescale Semiconductor
FLEXRAY
IPBI
S12X2
XBUS2
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