UPD78F9222CS-CAC-A Renesas Electronics America, UPD78F9222CS-CAC-A Datasheet - Page 58

• Manufacturer Part Number: UPD78F9222CS-CAC-A
• Description: MCU 8BIT 4KB FLASH 20PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9222CS-CAC-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: -

4.2.2
output mode by using port mode register 3 (PM3). When the P30 to P31 pins are used as an input port, an on-chip
pull-up resistor can be connected in 1-bit units by using pull-up resistor option register 3 (PU3). This port is also used
for both timer I/O and external interrupt request input pin functions.
reset function. For the setting method for pin functions, see CHAPTER 17 OPTION BYTE.
56
Pins P30 and P31 constitute a 2-bit I/O port with an output latch. Each bit of this port can be set to the input or
Reset signal generation sets port 3 to the input mode.
P34 is a 1-bit input-only port. This pin is also used as a RESET pin, and when the power is turned on, this is the
When P34 is used as an input port pin, connect the pull-up resistor.
Figures 4-3 to 4-5 show the block diagrams of port 3.
Port 3
P3:
PU3:
PM3:
RD:
WR
WR
WR
WR
RD
: Write signal
PORT
PM
PU
Port register 3
Pull-up resistor option register 3
Port mode register 3
Read signal
Output latch
Alternate
function
PM30
PU30
(P30)
PU3
PM3
P3
Figure 4-3. Block Diagram of P30
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16898EJ6V0UD
V
DD
P-ch
P30/TI000/INTP0