MC908GR32ACFAE Freescale Semiconductor, MC908GR32ACFAE Datasheet - Page 267
![IC MCU 32K FLASH 8MHZ 48-LQFP](/photos/12/37/123791/mc908gr32acfae_sml.jpg)
MC908GR32ACFAE
Manufacturer Part Number
MC908GR32ACFAE
Description
IC MCU 32K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GR32ACFJE.pdf
(314 pages)
Specifications of MC908GR32ACFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
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
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
SCI, SPI
Rohs Compliant
Yes
Processor Series
HC08GR
Core
HC08
Data Bus Width
8 bit
Data Ram Size
1.5 KB
Interface Type
ESCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
53
Number Of Timers
8
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68CBL05CE, M68EML08GPGTE
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 24 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GR32ACFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MC908GR32ACFAER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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19.3 Monitor Module (MON)
The monitor module allows debugging and programming of the microcontroller unit (MCU) through a
single-wire interface with a host computer. Monitor mode entry can be achieved without use of the higher
test voltage, V
requirements for in-circuit programming.
Features of the monitor module include:
19.3.1 Functional Description
Figure 19-9
The monitor module receives and executes commands from a host computer.
Figure 19-10
a host computer via a standard RS-232 interface.
Simple monitor commands can access any memory address. In monitor mode, the MCU can execute
code downloaded into RAM by a host computer while most MCU pins retain normal operating mode
functions. All communication between the host computer and the MCU is through the PTA0 pin. A
level-shifting and multiplexing interface is required between PTA0 and the host computer. PTA0 is used
in a wired-OR configuration and requires a pullup resistor.
Table 19-1
may be entered after a power-on reset (POR) and will allow communication at 7200 baud provided one
of the following sets of conditions is met:
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the FLASH difficult for
Freescale Semiconductor
unauthorized users.
•
•
•
•
•
•
•
•
•
•
•
•
Normal user-mode pin functionality
One pin dedicated to serial communication between MCU and host computer
Standard non-return-to-zero (NRZ) communication with host computer
Standard communication baud rate (7200 @ 2-MHz bus frequency)
Execution of code in random-access memory (RAM) or FLASH
FLASH memory security feature
FLASH memory programming interface
Monitor mode entry without high voltage, V
$FF)
Normal monitor mode entry if V
If $FFFE and $FFFF does not contain $FF (programmed state):
–
–
–
If $FFFE and $FFFF do not contain $FF (programmed state):
–
–
–
If $FFFE and $FFFF contain $FF (erased state):
–
–
The external clock is 4.0 MHz (7200 baud)
PTB4 = low
IRQ = V
The external clock is 8.0 MHz (7200 baud)
PTB4 = high
IRQ = V
The external clock is 8.0 MHz (7200 baud)
IRQ = V
shows the pin conditions for entering monitor mode. As specified in the table, monitor mode
shows a simplified diagram of the monitor mode.
and
TST
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
, as long as vector addresses $FFFE and $FFFF are blank, thus reducing the hardware
Figure 19-11
TST
TST
DD
(this can be implemented through the internal IRQ pullup) or V
show example circuits used to enter monitor mode and communicate with
TST
(1)
is applied to IRQ
TST
, if reset vector is blank ($FFFE and $FFFF contain
Monitor Module (MON)
SS
267
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