S912XET256J2VAGR Freescale Semiconductor, S912XET256J2VAGR Datasheet - Page 262

• Manufacturer Part Number: S912XET256J2VAGR
• Description: 16-bit Microcontrollers - MCU Watchdog OSC/Timer -40 C to + 105 C HCS12X MCU SPI
• Manufacturer: Freescale Semiconductor

Specifications of S912XET256J2VAGR

• Core: HCS12X
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 16 KB
• On-chip Adc: Yes
• Package / Case: LQFP
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 24
• Interface Type: CAN, SCI, SPI
• Maximum Operating Temperature: + 105 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

Chapter 6 Interrupt (S12XINTV2)
6.1.1
The following terms and abbreviations are used in the document.
6.1.2
1. The vector base is a 16-bit address which is accumulated from the contents of the interrupt vector base register (IVBR, used
2. The IRQ interrupt can only be handled by the CPU
262
as upper byte) and 0x00 (used as lower byte).
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Interrupt vector base register (IVBR)
One spurious interrupt vector (at address vector base
One non-maskable system call interrupt vector request (at address vector base + 0x0012).
Three non-maskable access violation interrupt vector requests (at address vector base + 0x0014−
0x0018).
2–109 I bit maskable interrupt vector requests (at addresses vector base + 0x001A–0x00F2).
Each I bit maskable interrupt request has a configurable priority level and can be configured to be
handled by either the CPU or the XGATE module
I bit maskable interrupts can be nested, depending on their priority levels.
One X bit maskable interrupt vector request (at address vector base + 0x00F4).
One non-maskable software interrupt request (SWI) or background debug mode vector request (at
address vector base + 0x00F6).
One non-maskable unimplemented op-code trap (TRAP) vector (at address vector base + 0x00F8).
Three system reset vectors (at addresses 0xFFFA–0xFFFE).
Determines the highest priority XGATE and interrupt vector requests, drives the vector to the
XGATE module or to the bus on CPU request, respectively.
Wakes up the system from stop or wait mode when an appropriate interrupt request occurs or
whenever XIRQ is asserted, even if X interrupt is masked.
XGATE can wake up and execute code, even with the CPU remaining in stop or wait mode.
Glossary
Features
XGATE
Term
XIRQ
MCU
CCR
DMA
IRQ
ISR
INT
IPL
Condition Code Register (in the S12X CPU)
Direct Memory Access
Interrupt
Interrupt Processing Level
Interrupt Service Routine
Micro-Controller Unit
refers to the XGATE co-processor; XGATE is an optional feature
refers to the interrupt request associated with the IRQ pin
refers to the interrupt request associated with the XIRQ pin
MC9S12XE-Family Reference Manual Rev. 1.25
Table 6-2. Terminology
2
Meaning
.
1
+ 0x0010).
Freescale Semiconductor