UPD78F9222MC-5A4-A Renesas Electronics America, UPD78F9222MC-5A4-A Datasheet - Page 85

• Manufacturer Part Number: UPD78F9222MC-5A4-A
• Description: MCU 8BIT 4KB FLASH 20PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9222MC-5A4-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 4KB (4K 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: -

(3) External clock input circuit
Remark PCC:
If external clock input is selected by the option byte, the following is possible.
Figures 5-12 and 5-13 show the timing chart and status transition diagram of default start by external clock input.
High-speed operation
The accuracy of processing is improved as compared with high-speed internal oscillation (8 MHz (TYP.))
because an oscillation frequency of 2 to 10 MHz can be selected and an external clock with a small frequency
deviation can be supplied.
Improvement of expandability
If the external clock input circuit is selected as the oscillator, the X2 pin can be used as an I/O port pin. For
details, refer to CHAPTER 4 PORT FUNCTIONS.
PPCC: Preprocessor clock control register
Figure 5-11. Status Transition of Default Start by Crystal/Ceramic Oscillation
Processor clock control register
Interrupt
HALT
CHAPTER 5 CLOCK GENERATORS
oscillation stabilization
oscillation selected
Clock division ratio
instruction
Crystal/ceramic
variable during
power-on-clear
CPU operation
HALT
Wait for clock
by option byte
User’s Manual U16898EJ6V0UD
Reset by
application
Power
V
Start with PCC = 02H,
PPCC = 02H
instruction
DD
STOP
> 2.1 V (TYP.)
STOP
Interrupt
Reset signal
83