UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 590
UPD78F0550MA-FAA-AX
Manufacturer Part Number
UPD78F0550MA-FAA-AX
Description
MCU 8BIT 16-SSOP
Manufacturer
Renesas Electronics America
Series
78K0/Kx2-Lr
Datasheet
1.UPD78F0550MA-FAA-AX.pdf
(734 pages)
Specifications of UPD78F0550MA-FAA-AX
Package / Case
*
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Speed
10MHz
Number Of I /o
12
Core Processor
78K/0
Program Memory Type
FLASH
Ram Size
384 x 8
Program Memory Size
4KB (4K x 8)
Data Converters
A/D 4x10b
Oscillator Type
Internal
Peripherals
LVD, POR, PWM, WDT
Connectivity
I²C, LIN, UART/USART
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F0550MA-FAA-AX
Manufacturer:
Renesas
Quantity:
800
Part Number:
UPD78F0550MA-FAA-AX
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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18.3 Register Controlling Key Interrupt
590
(1) Key return mode register (KRM)
(1) 44-pin products
(2) 48-pin products
Cautions 1. If any of the KRMn bits used is set to 1, set bit n (PU7n) of the corresponding pull-up
Remark n = 0 to 3: 44-pin products of 78K0/KC2-L
This register controls the KRMn bit using the KRn signal.
KRM is set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears KRM to 00H.
n = 0 to 5: 48-pin products of 78K0/KC2-L
2. If KRM is changed, the interrupt request flag may be set. Therefore, disable interrupts and
3. The bits not used in the key interrupt mode can be used as normal ports.
4. For the 44-pin products of 78K0/KC2-L, be sure to set bits 4 to 7 of KRM to “0”. For the 48-
Symbol
Symbol
Address: FF6EH
Address: FF6EH
KRM
KRM
resistor register 7 (PU7) to 1.
then change the KRM register. Clear the interrupt request flag and enable interrupts.
pin products of 78K0/KC2-L, be sure to set bits 6 and 7 of KRM to “0”.
Figure 18-2. Format of Key Return Mode Register (KRM) (78K0/KC2-L)
KRMn
0
1
7
7
0
0
Does not detect key interrupt signal
Detects key interrupt signal
After reset: 00H
After reset: 00H
CHAPTER 18 KEY INTERRUPT FUNCTION
0
0
6
6
Preliminary User’s Manual U19111EJ2V1UD
KRM5
5
0
5
R/W
R/W
KRM4
Key interrupt mode control
4
0
4
KRM3
KRM3
3
3
KRM2
KRM2
2
2
KRM1
KRM1
KRM0
KRM0
0
0
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