MC908GZ16MFAE Freescale Semiconductor, MC908GZ16MFAE Datasheet - Page 251
![IC MCU 16K FLASH 8MHZ 48-LQFP](/photos/12/38/123827/mc908gz16mfae_sml.jpg)
MC908GZ16MFAE
Manufacturer Part Number
MC908GZ16MFAE
Description
IC MCU 16K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68908GZ8CFJER.pdf
(314 pages)
Specifications of MC908GZ16MFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, LIN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Controller Family/series
HC08
No. Of I/o's
37
Ram Memory Size
1KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
CAN, SCI, SPI
Rohs Compliant
Yes
Processor Series
HC08GZ
Core
HC08
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
ESCI, SPI, UART
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
37
Number Of Timers
4
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68EML08GZE
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
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Chapter 18
Timebase Module (TBM)
18.1 Introduction
This section describes the timebase module (TBM). The TBM will generate periodic interrupts at user
selectable rates using a counter clocked by the external clock source. This TBM version uses 15 divider
stages, eight of which are user selectable. A configuration option bit to select an additional 128 divide of
the external clock source can be selected. See
18.2 Features
Features of the TBM module include:
18.3 Functional Description
This module can generate a periodic interrupt by dividing the clock source supplied from the clock
generator module, CGMXCLK.
The counter is initialized to all 0s when TBON bit is cleared. The counter, shown in
counting when the TBON bit is set. When the counter overflows at the tap selected by TBR2–TBR0, the
TBIF bit gets set. If the TBIE bit is set, an interrupt request is sent to the CPU. The TBIF flag is cleared
by writing a 1 to the TACK bit. The first time the TBIF flag is set after enabling the timebase module, the
interrupt is generated at approximately half of the overflow period. Subsequent events occur at the exact
period.
The timebase module may remain active after execution of the STOP instruction if the crystal oscillator
has been enabled to operate during stop mode through the OSCENINSTOP bit in the configuration
register. The timebase module can be used in this mode to generate a periodic wakeup from stop mode.
18.4 Interrupts
The timebase module can periodically interrupt the CPU with a rate defined by the selected TBMCLK and
the select bits TBR2–TBR0. When the timebase counter chain rolls over, the TBIF flag is set. If the TBIE
bit is set, enabling the timebase interrupt, the counter chain overflow will generate a CPU interrupt
request.
Freescale Semiconductor
•
•
•
External clock or an additional divide-by-128 selected by configuration option bit as clock source
Software configurable periodic interrupts with divide-by: 8, 16, 32, 64, 128, 2048, 8192, and 32768
taps of the selected clock source
Configurable for operation during stop mode to allow periodic wakeup from stop
Interrupts must be acknowledged by writing a logic 1 to the TACK bit.
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Chapter 5 Configuration Register (CONFIG)
NOTE
Figure
18-1, starts
251
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