UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 84

• 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: -

(2) Crystal/ceramic oscillator
82
Remark PCC:
(a) The internal reset signal is generated by the power-on-clear function on power application, the option byte is
(b) The option byte is referenced and the system clock is selected. Then the high-speed internal oscillation
If crystal/ceramic oscillation is selected by the option byte, a clock frequency of 2 to 10 MHz can be selected and
the accuracy of processing is improved because the frequency deviation is small, as compared with high-speed
internal oscillation (8 MHz (TYP.)).
Figures 5-10 and 5-11 show the timing chart and status transition diagram of default start by the crystal/ceramic
oscillator.
referenced after reset, and the system clock is selected.
clock operates as the system clock.
PPCC: Preprocessor clock control register
Figure 5-9. Status Transition of Default Start by High-Speed internal oscillation
Processor clock control register
Interrupt
HALT
CHAPTER 5 CLOCK GENERATORS
instruction
High-speed internal
Clock division ratio
oscillator selected
HALT
power-on-clear
variable during
CPU operation
by option byte
User’s Manual U17446EJ5V0UD
Reset by
application
Power
instruction
V
Start with PCC = 02H,
PPCC = 02H
STOP
DD
> 2.1 V (TYP.)
STOP
Interrupt
Reset signal