UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 507
![no-image](/images/manufacturer_photos/0/4/470/nec_sml.jpg)
UPD78F0537DGA(T)-9EV-A
Manufacturer Part Number
UPD78F0537DGA(T)-9EV-A
Description
8BIT MCU, 128K FLASH, 7KB RAM, SMD
Manufacturer
NEC
Datasheet
1.UPD78F0535GBT-UEU-A.pdf
(773 pages)
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
- Current page: 507 of 773
- Download datasheet (6Mb)
(5) Program status word (PSW)
The program status word is a register used to hold the instruction execution result and the current status for an
interrupt request. The IE flag that sets maskable interrupt enable/disable and the ISP flag that controls multiple
interrupt servicing are mapped to the PSW.
Besides 8-bit read/write, this register can carry out operations using bit manipulation instructions and dedicated
instructions (EI and DI). When a vectored interrupt request is acknowledged, if the BRK instruction is executed,
the contents of the PSW are automatically saved into a stack and the IE flag is reset to 0. If a maskable interrupt
request is acknowledged, the contents of the priority specification flag of the acknowledged interrupt are
transferred to the ISP flag. The PSW contents are also saved into the stack with the PUSH PSW instruction.
They are restored from the stack with the RETI, RETB, and POP PSW instructions.
Reset signal generation sets PSW to 02H.
PSW
<7>
IE
<6>
Z
RBS1
<5>
<4>
AC
Figure 19-6. Format of Program Status Word
RBS0
<3>
CHAPTER 19 INTERRUPT FUNCTIONS
2
0
User’s Manual U17260EJ6V0UD
<1>
ISP
CY
0
ISP
IE
0
1
0
1
Used when normal instruction is executed
After reset
02H
High-priority interrupt servicing (low-priority
interrupt disabled)
Interrupt request not acknowledged, or low-
priority interrupt servicing (all maskable
interrupts enabled)
Disabled
Enabled
Interrupt request acknowledgment enable/disable
Priority of interrupt currently being serviced
507
Related parts for UPD78F0537DGA(T)-9EV-A
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![UPD70325L-8](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
16/8 bit single-chip microcomputer
Manufacturer:
NEC
Datasheet:
![UPC1316C](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
Dual audio power amp circuit
Manufacturer:
NEC
Datasheet:
![UPC393C](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
Dual comparator
Manufacturer:
NEC
Datasheet:
![UPA572T](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
MOS type composite field effect transistor
Manufacturer:
NEC
Datasheet:
![UPA672T](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
50 V/100 mA FET array incorporating 2 N-ch MOSFETs
Manufacturer:
NEC
Datasheet:
![UPA802T](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
6-pin small MM high-frequency double transistor
Manufacturer:
NEC
Datasheet:
![UPA803T](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
6-pin small MM high-frequency double transistor
Manufacturer:
NEC
Datasheet:
![UPA805T](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
6-pin small MM high-frequency double transistor
Manufacturer:
NEC
Datasheet:
![UPA807T](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
6-pin small MM high-frequency double transistor
Manufacturer:
NEC
Datasheet:
![UPA836TF](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
Twin transistors equipped with different model chips(6P small MM)
Manufacturer:
NEC
Datasheet:
![UPC1676G](/images/manufacturer_photos/0/4/470/nec_tmb.jpg)
Part Number:
Description:
Bipolar analog integrated circuit
Manufacturer:
NEC
Datasheet: