UPD78F9222CS-CAC-A Renesas Electronics America, UPD78F9222CS-CAC-A Datasheet - Page 57

• 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: -

4.2.1
port mode register 2 (PM2). When the P20 to P23 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 2 (PU2).
Port 2 is a 4-bit I/O port with an output latch. Each bit of this port can be set to the input or output mode by using
This port is also used as the analog input pins of the internal A/D converter.
Reset signal generation sets port 2 to the input mode.
Figure 4-2 shows the block diagram of port 2.
Port 2
P2:
PU2:
PM2:
PMC2: Port mode control register 2
RD:
WR
WR
WR
WR
WR
RD
PORT
PMC
PM
PU
: Write signal
Port register 2
Pull-up resistor option register 2
Port mode register 2
Read signal
PMC20 to PMC23
PM20 to PM23
PU20 to PU23
(P20 to P23)
Output latch
A/D converter
PMC2
PM2
PU2
P2
Figure 4-2. Block Diagram of P20 to P23
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16898EJ6V0UD
V
DD
P-ch
P20/ANI0 to P23/ANI3
55