MC9S08QG4MPAE Freescale Semiconductor, MC9S08QG4MPAE Datasheet - Page 250

IC MCU 4K FLASH 8-PDIP

MC9S08QG4MPAE

Manufacturer Part Number
MC9S08QG4MPAE
Description
IC MCU 4K FLASH 8-PDIP
Manufacturer
Freescale Semiconductor
Series
HCS08r
Datasheet

Specifications of MC9S08QG4MPAE

Core Processor
HCS08
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
4
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
8-DIP (0.300", 7.62mm)
Controller Family/series
HCS08
No. Of I/o's
6
Ram Memory Size
256Byte
Cpu Speed
20MHz
No. Of Timers
2
Embedded Interface Type
I2C, SCI, SPI
Rohs Compliant
Yes
Processor Series
S08QG
Core
HCS08
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
I2C, SCI, SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Number Of Timers
1
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
3rd Party Development Tools
EWS08
Development Tools By Supplier
DEMO9S08QG8E
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
Development Support
Figure 17-4
asynchronous to the target MCU, there is a 0-to-1 cycle delay from the host-generated falling edge on
BKGD to the start of the bit time as perceived by the target MCU. The host initiates the bit time but the
target HCS08 finishes it. Because the target wants the host to receive a logic 0, it drives the BKGD pin low
for 13 BDC clock cycles, then briefly drives it high to speed up the rising edge. The host samples the bit
level about 10 cycles after starting the bit time.
17.2.3
BDC commands are sent serially from a host computer to the BKGD pin of the target HCS08 MCU. All
commands and data are sent MSB-first using a custom BDC communications protocol. Active background
mode commands require that the target MCU is currently in the active background mode while
non-intrusive commands may be issued at any time whether the target MCU is in active background mode
or running a user application program.
Table 17-1
meaning of each command.
Coding Structure Nomenclature
This nomenclature is used in
248
SPEED-UP PULSE
PERCEIVED START
TO BKGD PIN
TARGET MCU
(TARGET MCU)
HOST DRIVE
DRIVE AND
BDC CLOCK
OF BIT TIME
BKGD PIN
shows all HCS08 BDC commands, a shorthand description of their coding structure, and the
BDC Commands
shows the host receiving a logic 0 from the target HCS08 MCU. Because the host is
Figure 17-4. BDM Target-to-Host Serial Bit Timing (Logic 0)
Table 17-1
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
10 CYCLES
HOST SAMPLES BKGD PIN
to describe the coding structure of the BDC commands.
10 CYCLES
HIGH-IMPEDANCE
SPEEDUP
PULSE
EARLIEST START
OF NEXT BIT
Freescale Semiconductor

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