MC908GZ32VFAER Freescale Semiconductor, MC908GZ32VFAER Datasheet - Page 234
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MC908GZ32VFAER
Manufacturer Part Number
MC908GZ32VFAER
Description
IC MCU 8BIT 32K FLASH 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GZ60CFJE.pdf
(352 pages)
Specifications of MC908GZ32VFAER
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 24x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GZ32VFAER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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System Integration Module (SIM)
15.5.2 Reset
All reset sources always have equal and highest priority and cannot be arbitrated.
15.5.3 Break Interrupts
The break module can stop normal program flow at a software-programmable break point by asserting its
break interrupt output (see
Module
to the break interrupt subsection of each module to see how each module is affected by the break state.
15.5.4 Status Flag Protection in Break Mode
The SIM controls whether status flags contained in other modules can be cleared during break mode. The
user can select whether flags are protected from being cleared by properly initializing the break clear flag
enable bit (BCFE) in the SIM break flag control register (BFCR).
Protecting flags in break mode ensures that set flags will not be cleared while in break mode. This
protection allows registers to be freely read and written during break mode without losing status flag
information.
Setting the BCFE bit enables the clearing mechanisms. Once cleared in break mode, a flag remains
cleared even when break mode is exited. Status flags with a 2-step clearing mechanism — for example,
a read of one register followed by the read or write of another — are protected, even when the first step
is accomplished prior to entering break mode. Upon leaving break mode, execution of the second step
will clear the flag as normal.
15.6 Low-Power Modes
Executing the WAIT or STOP instruction puts the MCU in a low power-consumption mode for standby
situations. The SIM holds the CPU in a non-clocked state. The operation of each of these modes is
described in the following subsections. Both STOP and WAIT clear the interrupt mask (I) in the condition
code register, allowing interrupts to occur.
15.6.1 Wait Mode
In wait mode, the CPU clocks are inactive while the peripheral clocks continue to run.
the timing for wait mode entry.
234
(TIM2)). The SIM puts the CPU into the break state by forcing it to the SWI vector location. Refer
R/W
IAB
IDB
Note:
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
Previous data can be operand data or the WAIT opcode, depending on the
last instruction.
WAIT ADDR
Chapter 18 Timer Interface Module (TIM1)
PREVIOUS DATA
Figure 15-16. Wait Mode Entry Timing
WAIT ADDR + 1
NEXT OPCODE
SAME
SAME
and
SAME
Chapter 19 Timer Interface
SAME
Freescale Semiconductor
Figure 15-16
shows
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