ML610Q428-NNNTBZ03A7 Rohm Semiconductor, ML610Q428-NNNTBZ03A7 Datasheet - Page 84

• Manufacturer Part Number: ML610Q428-NNNTBZ03A7
• Description: MCU 8BIT 48K FLASH 128-TQFP
• Manufacturer: Rohm Semiconductor

Specifications of ML610Q428-NNNTBZ03A7

• Core Processor: nX-U8/100
• Core Size: 8-Bit
• Speed: 4.2MHz
• Connectivity: I²C, SSP, UART/USART
• Peripherals: LCD, Melody Driver, POR, PWM, WDT
• Number Of I /o: 14
• Program Memory Size: 48KB (24K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.1 V ~ 3.6 V
• Data Converters: A/D 2x12b, 2x24b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 70°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

State B: Non-maskable interrupt is being processed
B-1: When no instruction is executed in an interrupt routine
B-2: When one or more instructions are executed in an interrupt routine
Example of description: B-1
Intrpt_B-1:
Example of description: B-2-2
Intrpt_B-2-2:
PUSH ELR,EPSW,LR
BL Sub_1
POP PC，PSW，LR
RTI
:
:
:
:
B-2-1: When a subroutine is not called by the program in executing an interrupt routine
B-2-2: When a subroutine is called by the program in executing an interrupt routine
• Processing immediately after the start of interrupt routine execution
Specify “POP PC, PSW, LR” instead of the RTI instruction to return the saved data of the interrupt return address
to PC, the saved data of EPSW to PSW, and the saved data of LR to LR..
Specify the RTI instruction to return the contents of the ELR register to the PC and those of the EPSW register
to PSW.
• Processing immediately after the start of interrupt routine execution
• Processing at the end of interrupt routine execution
• Processing immediately after the start of interrupt routine execution
• Processing at the end of interrupt routine execution
Specify “PUSH ELR, EPSW” to save the interrupt return address and the PSW status in the stack.
Specify “POP PC, PSW” instead of the RTI instruction to return the contents of the stack to PC and PSW.
Specify “PUSH LR, ELR, EPSW” to save the interrupt return address, the subroutine return address, and the
EPSW status in the stack.
; B-1 state
; Return PC from ELR
; Return PSW form EPSW
; End
; Start
; Save ELR, EPSW, LR at the
beginning
; Call subroutine Sub_1
; Return PC from the stack
; Return PSW from the stack
; Return LR from the stack
; End
5 – 25
Example of description: B-2-1
Intrpt_B-2-1:
Sub_1:
PUSH ELR，EPSW
RT
:
:
:
POP PC，PSW
:
:
:
:
ML610Q428/ML610Q429 User’s Manual
Chapter 5 Interrupts (INTs)
；
; Return PC from LR
; End of subroutine
; Start
; Save ELR, EPSW at the
beginning
; Return PC from the stack
; Return PSW from the stack
; End