MC908AP32CBE Freescale Semiconductor, MC908AP32CBE Datasheet - Page 115
![IC MCU 32K FLASH 8MHZ 42DIP](/photos/12/18/121893/mc908ap32cbe_sml.jpg)
MC908AP32CBE
Manufacturer Part Number
MC908AP32CBE
Description
IC MCU 32K FLASH 8MHZ 42DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Specifications of MC908AP32CBE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SCI, SPI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
30
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
42-DIP (0.600", 15.24mm)
Controller Family/series
HC08
No. Of I/o's
30
Ram Memory Size
2KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
I2C, SCI, SPI
Rohs Compliant
Yes
Processor Series
HC08AP
Core
HC08
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
SCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
32
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Development Tools By Supplier
FSICEBASE, DEMO908AP64E, M68CBL05CE
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 8
Monitor ROM (MON)
8.1 Introduction
This section describes the monitor ROM (MON) and the monitor mode entry methods. The monitor ROM
allows complete testing of the MCU through a single-wire interface with a host computer. Monitor mode
entry can be achieved without use of the higher test voltage, V
and $FFFF are blank, thus reducing the hardware requirements for in-circuit programming.
In addition, to simplify user coding, routines are also stored in the monitor ROM area for FLASH memory
program /erase.
8.2 Features
Features of the monitor ROM include:
8.3 Functional Description
The monitor ROM receives and executes commands from a host computer.
circuit used to enter monitor mode and communicate with a host computer via a standard RS-232
interface.
Simple monitor commands can access any memory address. In monitor mode, the MCU can execute
code downloaded into RAM by a host computer while most MCU pins retain normal operating mode
functions. All communication between the host computer and the MCU is through the PTA0 pin. A
level-shifting and multiplexing interface is required between PTA0 and the host computer. PTA0 is used
in a wired-OR configuration and requires a pullup resistor.
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the FLASH difficult for
unauthorized users.
Freescale Semiconductor
•
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Normal user-mode pin functionality
One pin dedicated to serial communication between monitor ROM and host computer
Standard mark/space non-return-to-zero (NRZ) communication with host computer
Execution of code in RAM or FLASH
FLASH memory security feature
959 bytes monitor ROM code size
($FC00–$FDFF and $FE10–$FFCE)
Monitor mode entry without high voltage, V
$FF)
Standard monitor mode entry if high voltage, V
Resident routines for in-circuit programming
MC68HC908AP Family Data Sheet, Rev. 4
(1)
TST
, if reset vector is blank ($FFFE and $FFFF contain
TST
, is applied to IRQ1
TST
, as long as vector addresses $FFFE
Figure 8-1
shows an example
115
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