UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 503

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

Note
Cautions 1. Be sure to clear bits 1 to 7 of IF1H to 0 for the
Address: FFE0H After reset: 00H R/W
Symbol
IF0L
Address: FFE1H
Symbol
IF0H
Address: FFE2H
Symbol
IF1L
Address: FFE3H
Symbol
IF1H
µ
PD78F0534, 78F0535, 78F0536, 78F0537, and 78F0537D only.
2. When operating a timer, serial interface, or A/D converter after standby release, operate it
3. When manipulating a flag of the interrupt request flag register, use a 1-bit memory
Figure 19-2. Format of Interrupt Request Flag Registers (IF0L, IF0H, IF1L, IF1H)
to clear bits 4 to 7 of IF1H to 0 for the
78F0537D.
once after clearing the interrupt request flag. An interrupt request flag may be set by noise.
manipulation 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.
mov a, IF0L
and a, #0FEH
mov IF0L, a
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”.
manipulation instruction in C language.
TMIF010
SREIF6
XXIFX
PIF7
<7>
<7>
<7>
7
0
0
1
After reset: 00H
After reset: 00H
After reset: 00H
No interrupt request signal is generated
Interrupt request is generated, interrupt request status
TMIF000
PIF5
PIF6
<6>
<6>
<6>
6
0
CHAPTER 19 INTERRUPT FUNCTIONS
R/W
R/W
R/W
Therefore, care must be exercised when using an 8-bit memory
TMIF50
WTIF
PIF4
<5>
<5>
<5>
User’s Manual U17260EJ6V0UD
5
0
TMIFH0
KRIF
PIF3
<4>
<4>
<4>
4
0
Interrupt request flag
TMIF011
µ
TMIFH1
TMIF51
PD78F0534, 78F0535, 78F0536, 78F0537, and
µ
PIF2
<3>
<3>
<3>
<3>
PD78F0531, 78F0532, and 78F0533. Be sure
Note
TMIF001
DUALIF0
CSIIF10
STIF0
WTIIF
PIF1
<2>
<2>
<2>
<2>
Note
CSIIF11
STIF6
SRIF0
PIF0
<1>
<1>
<1>
<1>
Note
DMUIF
SRIF6
IICIF0
LVIIF
ADIF
<0>
<0>
<0>
<0>
Note
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