UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 333

• Manufacturer Part Number: UPD78F9234MC-5A4-A
• Description: MCU 8BIT 8KB FLASH 30PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9234MC-5A4-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2 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: -

20.1.1 Connection of INTP3 pin
X1 and X2 pins can be used as I/O port pins or the pins for oscillation, after the monitor program has been written.
Design circuits appropriately according to the relevant case among the cases shown below.
Pins for communication depend on whether the monitor program has been written or not. (refer to Table 20-1)
The INTP3 pin is used only for communication between QB-MINI2 and the target device during debugging.
(1) INTP3 pin is not used in target system (as is illustrated in Figure 20-1.
(2) QB-MINI2 is used only for programming, not for debugging
(3) QB-MINI2 is used for debugging and debugging of the INTP3 pin is performed only with a real machine
Notes 4. This pin is connected to enhance the accuracy of time measurement between run and break during
Figure 20-3. Circuit Connection for the Case Where QB-MINI2 Is Used Only for Programming
Figure 20-2. Circuit Connection for the Case Where INTP3 Pin Is Not Used in Target System
Connection)
See Figure 20-2.
See Figure 20-3.
See Figure 20-4.
5. The INTP3 pin is used for communication between QB-MINI2 and the target device during
debugging. Debugging is possible even if this pin is left open, but measurement error occurs in
several ms units.
debugging.
alternate-function pin cannot be used. For INTP3 pin connection, refer to 20.1.1 Connection of
INTP3 pin.
X1, X2, RESET, INTP3, V
Before writing the monitor program
Target connector
Target connector
Table 20-1. Pins for communication with QB-MINI2
When debugging is performed with QB-MINI2, therefore, the INTP3 pin and its
INTP
INTP
CHAPTER 20 ON-CHIP DEBUG FUNCTION
12
12
User’s Manual U17446EJ5V0UD
DD
, V
SS
V
DD
1 k
RESET, INTP3, V
After writing the monitor program
INTP3
INTP3
Target device
Target device
DD
, V
SS
Recommended Circuit
331