UPD78F1174AGF-GAT-AX Renesas Electronics America, UPD78F1174AGF-GAT-AX Datasheet - Page 182

• Manufacturer Part Number: UPD78F1174AGF-GAT-AX
• Description: MCU 16BIT 78K0R/KX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1174AGF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, EBI/EMI, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

5.1 Functions of External Bus Interface
RAM, and SFR areas. An external device is connected by using ports 0, 1, and 5 to 9. Ports 0, 1, and 5 to 9 control
signals such as address/data, read/write strobe, wait, and address strobe.
180
The external bus interface function is used to connect an external device to an area other than the internal ROM,
The external bus interface has the following features.
• The number of address bits can be selected from 8, 12, 16, and 20.
• Data bus supporting 8 bits and 16 bits
• Multiplexed bus and separate bus are supported.
• Separate bus mode and 16-bit bus mode are selected when an instruction is fetched from external memory.
The following table shows the pin functions in an external memory extension mode.
EX0 to EX7
EX8 to EX15
EX16 to EX23
EX24 to EX31
EX32 to EX35
RD
WR0
WR1
CLKOUT
WAIT
ASTB
Name
Pin Function When External Device Is Connected
External extension I/O (multiplexed address/data bus, data
bus)
External extension I/O (multiplexed address/data bus,
address bus, data bus)
External extension output (address bus)
External extension output (address bus)
External extension output (address bus)
Read strobe signal
Write strobe signal (8-bit bus mode, 16-bit bus mode
(lower byte))
Write strobe signal (16-bit bus mode (higher byte))
Internal system clock output
Wait signal
Address strobe signal
CHAPTER 5 EXTERNAL BUS INTERFACE
User’s Manual U18432EJ5V0UD
Function
P80 to P87
P50 to P57
P70/KR0 to P77/KR7/INTP11
P10/SCK00 to P17/TI02/TO02
P90 to P93
P64
P65
P66
P05
P06
P67
Alternate-Function Pin