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PDF UPD78F9418 Data sheet ( Hoja de datos )
| Número de pieza | UPD78F9418 | |
| Descripción | 8 Bit Single-Chip MicroController | |
| Fabricantes | NEC | |
| Logotipo |  |
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PRELIMINARY PRODUCT INFORMATION
MOS INTEGRATED CIRCUIT
µPD78F9418
8-BIT SINGLE-CHIP MICROCONTROLLER
The µPD78F9418 is µPD789417 sub-series product (LCD driver) of the 78K/0S series.
This microcontroller features an 8-bit CPU, LCD controller/driver, I/O ports, timers, a serial interface, A/D
converters, a comparator, and interrupt control circuits.
The µPD78F9418 replaces the internal masked ROM of the µPD789415, µPD789416, and µPD789417 with flash
memory, which enables the writing/erasing of a program while the device is mounted on the board.
The functions of this microcontroller is described in the following user’s manuals. Refer to these manuals
when designing a system based on this microcontroller.
µPD789407 and µPD789417 Sub-Series User’s Manual : To be released soon
78K/0S Series User’s Manual, Instruction
: U11047E
FEATURES
• Pin-compatible with masked ROM product (other than VPP pin)
• Flash memory: 32 Kbytes
• Internal data memory
• High-speed RAM: 512 bytes
• RAM for LCD display data: 28 bytes
• Variable instruction execution time: From high-speed (0.4 µs with the main system clock running at 5.0 MHz) to
ultra-low speed (122 µs with the subsystem clock running at 32.768 kHz)
• 43 I/O ports
• Serial interface channel: Switchable between three-wire serial I/O and UART modes
• LCD controller/driver:
• Up to 28 segment signal outputs
• Up to 4 common signal outputs
• Bias switchable between 1/2 and 1/3
• Seven A/D converters with an 10-bit resolution
• Six timers:
• 16-bit timer/counter
• Two 8-bit timer/event counters
• 8-bit timer/counter
• Clock timer
• Watchdog timer
• Power supply voltage VDD: 1.8 to 5.5 V
The information contained in this document is being issued in advance of the production cycle for the
device. The parameters for the device may change before final production or NEC Corporation, at its own
discretion, may withdraw the device prior to its production.
Document No. U12321EJ1V0PM00 (1st edition)
Date Published August 1997 J
Printed in Japan
©
1997
1 page  
CONTENTS
µPD78F9418
1. PIN CONFIGURATION (TOP VIEW) ................................................................................................7
2. BLOCK DIAGRAM ............................................................................................................................9
3. DIFFERENCES BETWEEN THE µPD78F9418 AND MASKED ROM PRODUCTS .......................10
4. PIN FUNCTIONS ..............................................................................................................................11
4.1 Port Pins................................................................................................................................................ 11
4.2 Non-Port Pins........................................................................................................................................ 12
4.3 Pin Input/Output Circuits and Handling of Unused Pins .................................................................. 13
5. CPU ARCHITECTURE .....................................................................................................................16
5.1 Memory Space ...................................................................................................................................... 16
5.2 Data Memory Addressing .................................................................................................................... 17
5.3 Processor Registers............................................................................................................................. 18
6. PERIPHERAL HARDWARE FUNCTIONS ....................................................................................23
6.1 Ports ...................................................................................................................................................... 23
6.2 Clock Generator.................................................................................................................................... 30
6.3 16-Bit Timer/Counter ............................................................................................................................ 35
6.4 8-Bit Timer/Event Counter ................................................................................................................... 40
6.5 Clock Timer ........................................................................................................................................... 47
6.6 Watchdog Timer ................................................................................................................................... 50
6.7 10-Bit A/D Converter............................................................................................................................. 54
6.8 Comparator ........................................................................................................................................... 59
6.9 Serial Interface Channel 0.................................................................................................................... 62
6.10 LCD Controller/Driver........................................................................................................................... 73
7. INTERRUPT FUNCTIONS ...............................................................................................................79
7.1 Interrupt Function Types ..................................................................................................................... 79
7.2 Interrupt Sources and Configuration.................................................................................................. 79
7.3 Interrupt Function Control Registers.................................................................................................. 82
8. STANDBY FUNCTION ....................................................................................................................89
8.1 Standby Function ................................................................................................................................. 89
8.2 Standby Function Control Register .................................................................................................... 92
9. RESET FUNCTIONS ........................................................................................................................93
10. FLASH MEMORY PROGRAMMING................................................................................................95
10.1 Selecting the Transmission Method................................................................................................ 95
10.2 Flash Memory Programming Functions.......................................................................................... 96
10.3 Connecting the Flashpro II ............................................................................................................... 96
5
5 Page 
µPD78F9418
4. PIN FUNCTIONS
4.1 Port Pins
Pin name
P00-P03
P20
P21
P22
P23
P24
P25
P26
P27
P40-P45
P46, P47
I/O
Function
When reset
Also used as
I/O Port 0
4-bit input/output port
Can be set to either input or output in 1-bit units
When used as an input port, whether the built-in pull-up resistor is to
be used can be specified by software.
Input
−
I/O Port 2
8-bit input/output port
Can be set to either input or output in 1-bit units
When used as an input port, whether the built-in pull-up resistor is to
be used can be specified by software.
Input
SCK /ASCK
SO/TxD
SI/RxD
CMPTOUT0/TO2
INTP0/TI0
INTP1/TI1
INTP2/TO5
I/O Port 4
8-bit input/output port
Can be set to either input or output in 1-bit units
When used as an input port, whether the built-in pull-up resistor is to
be used can be specified by software.
Input
INTP3/CPT5
KR0-KR5
−
P50-P53
P60
P61
P62-P66
P80-P87
I/O
Input
Port 5
4-bit N-channel open-drain input/output port
Can be set to either input or output in 1-bit units
Port 6
7-bit input-only port
I/O Port 8
8-bit input/output port
Can be set to either input or output in 1-bit units
When used as an input port, whether the built-in pull-up resistor is to
be used can be specified by software.
Input
Input
Input
−
ANI0/CMPIN0
ANI1/CMPREF0
ANI2-ANI6
S27-S20
P90-P93
I/O Port 9
4-bit input/output port
Can be set to either input or output in 1-bit units
When used as an input port, whether the built-in pull-up resistor is to
be used can be specified by software.
Input
S19-S16
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet UPD78F9418.PDF ] | |
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