UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 753
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UPD78F1506GF-GAT-AX
Manufacturer Part Number
UPD78F1506GF-GAT-AX
Description
MCU 16BIT 78K0R/LX3 128-LQFP
Manufacturer
Renesas Electronics America
Series
78K0R/Lx3r
Datasheet
1.UPD78F1500GK-GAK-AX.pdf
(1016 pages)
Specifications of UPD78F1506GF-GAT-AX
Core Processor
78K/0R
Core Size
16-Bit
Speed
20MHz
Connectivity
3-Wire SIO, I²C, LIN, UART/USART
Peripherals
DMA, LCD, LVD, POR, PWM, WDT
Number Of I /o
78
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x12b, D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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78K0R/Lx3
(1) Interrupt request flag registers (IF0L, IF0H, IF1L, IF1H, IF2L, IF2H)
R01UH0004EJ0401 Rev.4.01
Jul 2, 2010
The interrupt request flags are set to 1 when the corresponding interrupt request is generated or an instruction is
executed. They are cleared to 0 when an instruction is executed upon acknowledgment of an interrupt request or
upon reset signal generation.
When an interrupt is acknowledged, the interrupt request flag is automatically cleared and then the interrupt routine is
entered.
IF0L, IF0H, IF1L, IF1H, IF2L, and IF2H can be set by a 1-bit or 8-bit memory manipulation instruction. When IF0L
and IF0H, IF1L and IF1H, and IF2L and IF2H are combined to form 16-bit registers IF0, IF1, and IF2, they can be set
by a 16-bit memory manipulation instruction.
Reset signal generation clears these registers to 00H.
Cautions 1. When operating a timer, serial interface, or A/D converter after standby release, operate it once
Remark If an instruction that writes data to this register is executed, the number of instruction execution clocks
increases by 2 clocks.
2. When manipulating a flag of the interrupt request flag register, use a 1-bit memory manipulation
after clearing the interrupt request flag. An interrupt request flag may be set by noise.
instruction (CLR1). When describing in C language, use a bit manipulation instruction such as
“IF0L.0 = 0;” or “_asm(“clr1 IF0L, 0”);” because the compiled assembler must be a 1-bit memory
manipulation instruction (CLR1).
If a program is described in C language using an 8-bit memory manipulation instruction such as
“IF0L &= 0xfe;” and compiled, it becomes the assembler of three instructions.
In this case, even if the request flag of another bit of the same interrupt request flag register
(IF0L) is set to 1 at the timing between “mov a, IF0L” and “mov IF0L, a”, the flag is cleared to 0
at “mov IF0L, a”. Therefore, care must be exercised when using an 8-bit memory manipulation
instruction in C language.
mov a, IF0L
and a, #0FEH
mov IF0L, a
CHAPTER 19 INTERRUPT FUNCTIONS
753
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