MC68HC908QY1MDW Freescale Semiconductor, MC68HC908QY1MDW Datasheet - Page 112

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MC68HC908QY1MDW

Manufacturer Part Number
MC68HC908QY1MDW
Description
8-bit Microcontrollers - MCU 8 Bit 8MHz
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC68HC908QY1MDW

Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
HC08
Data Bus Width
8 bit
Maximum Clock Frequency
8 MHz
Program Memory Size
1.5 KB
Data Ram Size
128 B
On-chip Adc
No
Operating Supply Voltage
3.3 V to 5.5 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
SOIC-16
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
13
Number Of Timers
2
Program Memory Type
Flash
Factory Pack Quantity
47
Supply Voltage - Max
5.5 V
Supply Voltage - Min
2.7 V
System Integration Module (SIM)
13.6.1.2 SWI Instruction
The SWI instruction is a non-maskable instruction that causes an interrupt regardless of the state of the
interrupt mask (I bit) in the condition code register.
13.6.2 Interrupt Status Registers
The flags in the interrupt status registers identify maskable interrupt sources.
interrupt sources and the interrupt status register flags that they set. The interrupt status registers can be
useful for debugging.
112
Priority
Highest
Lowest
1. The I bit in the condition code register is a global mask for all interrupt sources except the SWI
A software interrupt pushes PC onto the stack. A software interrupt does
not push PC – 1, as a hardware interrupt does.
instruction.
Reset
SWI instruction
IRQ pin
Timer channel 0 interrupt
Timer channel 1 interrupt
Timer overflow interrupt
Keyboard interrupt
ADC conversion complete interrupt
INT1
INT2
Figure 13-10
MC68HC908QY/QT Family Data Sheet, Rev. 6
Source
CLI
LDA
PSHH
PULH
RTI
PSHH
PULH
RTI
Table 13-3. Interrupt Sources
#$FF
.
Interrupt Recognition Example
NOTE
COCO
CH0F
CH1F
KEYF
IRQF
Flag
TOF
INT1 INTERRUPT SERVICE ROUTINE
INT2 INTERRUPT SERVICE ROUTINE
IMASKK
Mask
IMASK
CH0IE
CH1IE
AIEN
TOIE
(1)
Register
Flag
IF15
IF14
INT
IF1
IF3
IF4
IF5
BACKGROUND ROUTINE
Table 13-3
$FFDE–$FFDF
$FFFC–$FFFD
$FFFE–$FFFF
$FFFA–$FFFB
$FFF6–$FFF7
$FFF4–$FFF5
$FFF2–$FFF3
$FFE0–$FFE1
Address
Vector
Freescale Semiconductor
summarizes the

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