UPD78F0513AMC-GAA-AX Renesas Electronics America, UPD78F0513AMC-GAA-AX Datasheet - Page 729

• Manufacturer Part Number: UPD78F0513AMC-GAA-AX
• Description: MCU 8BIT 38PIN SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2r

Specifications of UPD78F0513AMC-GAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2
(1) Signal collision
(2) Malfunction of other device
R01UH0008EJ0401 Rev.4.01
Jul 15, 2010
If the dedicated flash memory programmer (output) is connected to a pin (input) of a serial interface connected to
another device (output), signal collision takes place. To avoid this collision, either isolate the connection with the
other device, or make the other device go into an output high-impedance state.
If the dedicated flash memory programmer (output or input) is connected to a pin (input or output) of a serial interface
connected to another device (input), a signal may be output to the other device, causing the device to malfunction. To
avoid this malfunction, isolate the connection with the other device.
microcontrollers
microcontrollers
microcontrollers
78K0/Kx2
78K0/Kx2
78K0/Kx2
Input pin
Pin
Pin
Figure 27-7. Signal Collision (Input Pin of Serial Interface)
In the flash memory programming mode, the signal output by the device
collides with the signal sent from the dedicated flash programmer.
Therefore, isolate the signal of the other device.
If the signal output by the 78K0/Kx2 microcontrollers in the flash memory
programming mode affects the other device, isolate the signal of the other
device.
If the signal output by the dedicated flash memory programmer in the flash
memory programming mode affects the other device, isolate the signal of
the other device.
Figure 27-8. Malfunction of Other Device
Signal collision
Dedicated flash memory
programmer connection pin
Dedicated flash memory
programmer connection pin
Dedicated flash memory
programmer connection pin
Other device
Other device
Other device
Output pin
Input pin
Input pin
CHAPTER 27 FLASH MEMORY
729