UPD78F0552MA-FAA-AX Renesas Electronics America, UPD78F0552MA-FAA-AX Datasheet - Page 716

• Manufacturer Part Number: UPD78F0552MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0552MA-FAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 9
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2-L
25.4 Connection of Pins on Board
provided on the target system.
programming mode on the board.
same status as immediately after reset. Therefore, if the external device does not recognize the state immediately after
reset, the pins must be handled as described below.
25.4.1 TOOL pins
on the board, care must be exercised so that signals do not collide or that the other device does not malfunction.
(1) Signal collision
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
To write the flash memory on-board, connectors that connect the dedicated flash memory programmer must be
When the flash memory programming mode is set, all the pins not used for programming the flash memory are in the
The pins used for communication in flash memory programming mode are shown in the table below.
To connect the dedicated flash memory programmer to the pins of a serial interface that is connected to another device
If the dedicated flash memory programmer is connected to the TOOL pin that is connected to another device, signal
collision takes place. To avoid this collision, either isolate the connection with the other device, or make the other
device go into a high-impedance state.
Table 25-3. Pins Used for Communication in Flash Memory Programming Mode
TOOLC0, TOOLC1
TOOLD0, TOOLD1
microcontrollers
78K0/Kx2-L
TOOL pin
Pin Name
First provide a function that selects the normal operation mode or flash memory
In the flash memory programming mode, the signal of the other device
collides with the signal of the dedicated flash programmer. Therefore,
isolate the signal of the other device.
Figure 25-3. Signal Collision (TOOL Pin)
Signal collision
Connect this pin directly to the dedicated flash
memory programmer or pull it down by connecting it
to V
Connect this pin directly to the dedicated flash
memory programmer or pull it up by connecting it to
V
DD
SS
via a resistor (3 k to 10 kΩ)
via a resistor (10 kΩ)
Connection of Pins
Dedicated flash memory
programmer connection pin
Other device
Input pin or
output pin
CHAPTER 25 FLASH MEMORY
702