MC908GZ32CFAE Freescale Semiconductor, MC908GZ32CFAE Datasheet - Page 285
![IC MCU 32K FLASH 8MHZ 48-LQFP](/photos/37/62/376278/tqfp-48_sml.jpg)
MC908GZ32CFAE
Manufacturer Part Number
MC908GZ32CFAE
Description
IC MCU 32K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GZ60CFJE.pdf
(352 pages)
Specifications of MC908GZ32CFAE
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 ~ 85°C
Package / Case
48-LQFP
Processor Series
HC08GZ
Core
HC08
Data Bus Width
8 bit
Data Ram Size
1.5 KB
Interface Type
CAN/ESCI/SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
53
Number Of Timers
8
Operating Supply Voltage
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68EML08GZE
Minimum Operating Temperature
- 40 C
On-chip Adc
24-ch x 10-bit
Controller Family/series
HC08
No. Of I/o's
37
Ram Memory Size
1.5KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
CAN, SCI, SPI
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GZ32CFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC908GZ32CFAE
Manufacturer:
FREESCALE
Quantity:
20 000
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19.3.3.1 Unbuffered Output Compare
Any output compare channel can generate unbuffered output compare pulses as described in
Output
the new value over the old value currently in the TIM2 channel registers.
An unsynchronized write to the TIM2 channel registers to change an output compare value could cause
incorrect operation for up to two counter overflow periods. For example, writing a new value before the
counter reaches the old value but after the counter reaches the new value prevents any compare during
that counter overflow period. Also, using a TIM2 overflow interrupt routine to write a new, smaller output
compare value may cause the compare to be missed. The TIM2 may pass the new value before it is
written.
Use the following methods to synchronize unbuffered changes in the output compare value on channel x:
19.3.3.2 Buffered Output Compare
Channels 0 and 1 can be linked to form a buffered output compare channel whose output appears on the
T2CH0 pin. The TIM2 channel registers of the linked pair alternately control the output.
Setting the MS0B bit in TIM2 channel 0 status and control register (T2SC0) links channel 0 and channel 1.
The output compare value in the TIM2 channel 0 registers initially controls the output on the T2CH0 pin.
Writing to the TIM2 channel 1 registers enables the TIM2 channel 1 registers to synchronously control the
output after the TIM2 overflows. At each subsequent overflow, the TIM2 channel registers (0 or 1) that
control the output are the ones written to last. T2SC0 controls and monitors the buffered output compare
function, and TIM2 channel 1 status and control register (T2SC1) is unused. While the MS0B bit is set,
the channel 1 pin, T2CH1, is available as a general-purpose I/O pin.
Channels 2 and 3 can be linked to form a buffered output compare channel whose output appears on the
T2CH2 pin. The TIM2 channel registers of the linked pair alternately control the output.
Setting the MS2B bit in TIM2 channel 2 status and control register (T2SC2) links channel 2 and channel 3.
The output compare value in the TIM2 channel 2 registers initially controls the output on the T2CH2 pin.
Writing to the TIM2 channel 3 registers enables the TIM2 channel 3 registers to synchronously control the
output after the TIM2 overflows. At each subsequent overflow, the TIM2 channel registers (2 or 3) that
control the output are the ones written to last. T2SC2 controls and monitors the buffered output compare
function, and TIM2 channel 3 status and control register (T2SC3) is unused. While the MS2B bit is set,
the channel 3 pin, T2CH3, is available as a general-purpose I/O pin.
Channels 4 and 5 can be linked to form a buffered output compare channel whose output appears on the
T2CH4 pin. The TIM2 channel registers of the linked pair alternately control the output.
Setting the MS4B bit in TIM2 channel 4 status and control register (T2SC4) links channel 4 and channel 5.
The output compare value in the TIM2 channel 4 registers initially controls the output on the T2CH4 pin.
Freescale Semiconductor
•
•
When changing to a smaller value, enable channel x output compare interrupts and write the new
value in the output compare interrupt routine. The output compare interrupt occurs at the end of
the current output compare pulse. The interrupt routine has until the end of the counter overflow
period to write the new value.
When changing to a larger output compare value, enable TIM2 overflow interrupts and write the
new value in the TIM2 overflow interrupt routine. The TIM2 overflow interrupt occurs at the end of
the current counter overflow period. Writing a larger value in an output compare interrupt routine
(at the end of the current pulse) could cause two output compares to occur in the same counter
overflow period.
Compare. The pulses are unbuffered because changing the output compare value requires writing
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
Functional Description
19.3.3
285
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