MC908QB4CPE Freescale Semiconductor, MC908QB4CPE Datasheet - Page 205
MC908QB4CPE
Manufacturer Part Number
MC908QB4CPE
Description
IC MCU 8BIT 4K FLASH 16-DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908QB8CDWE.pdf
(236 pages)
Specifications of MC908QB4CPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
13
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
16-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Part Number:
MC908QB4CPE
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The MCU executes the SWI and PSHH instructions when it enters monitor mode. The RUN command
tells the MCU to execute the PULH and RTI instructions. Before sending the RUN command, the host can
modify the stacked CPU registers to prepare to run the host program. The READSP command returns
the incremented stack pointer value, SP + 1. The high and low bytes of the program counter are at
addresses SP + 5 and SP + 6.
Freescale Semiconductor
Data Returned
Data Returned
Description
Description
Operand
Operand
Opcode
Opcode
Table 17-7. READSP (Read Stack Pointer) Command
Figure 17-17. Stack Pointer at Monitor Mode Entry
Table 17-8. RUN (Run User Program) Command
ECHO
FROM HOST
Reads stack pointer
None
Returns incremented stack pointer value (SP + 1) in high-byte:low-byte
order
$0C
Executes PULH and RTI instructions
None
None
$28
READSP
MC68HC908QB8 Data Sheet, Rev. 3
HIGH BYTE OF PROGRAM COUNTER
LOW BYTE OF PROGRAM COUNTER
HIGH BYTE OF INDEX REGISTER
READSP
LOW BYTE OF INDEX REGISTER
CONDITION CODE REGISTER
ECHO
FROM HOST
Command Sequence
Command Sequence
RUN
ACCUMULATOR
RUN
HIGH
SP
SP
SP + 1
SP + 2
SP + 3
SP + 4
SP + 5
SP + 6
SP + 7
LOW
SP
RETURN
Monitor Module (MON)
205
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