Outline Of Function - NEC PD78052 User Manual

1.8 Outline of Function

Item
ROM
Internal
memory
High-speed RAM
Buffer RAM
Expansion RAM
Memory space
General register
Minimum
With main system clock selected
instruction
With subsystem clock selected
execution time
Instruction set
I/O port
A/D converter
D/A converter
Serial interface
Timer
Timer output
Clock output
Buzzer output
Notes 1. The PD78P054 is the PROM version for the PD78052, 78053, and 78054.
2. The PD78P058 is the PROM version for the PD78055, 78056, and 78058.
3. The capacities of the internal PROM and the internal high-speed RAM can be changed using the
memory switching register (IMS).
4. The capacity of the internal expansion RAM can be changed using the internal expansion RAM size
switching register (IXS).
46
CHAPTER 1 OUTLINE ( PD78054 Subseries)
Part Number
PD78052 PD78053
Mask ROM
16 Kbytes 24 Kbytes 32 Kbytes 32 Kbytes 40 Kbytes 48 Kbytes 60 Kbytes 60 Kbytes
512 bytes 1024 bytes
32 bytes
None
64 Kbytes
8 bits 8 4 banks
0.4 s/0.8 s/1.6 s/3.2 s/6.4 s/12.8 s (@ 5.0 MHz)
122 s (@ 32.768 kHz)
• 16-bit operation
• Multiply/divide (8 bits
• Bit manipulate (set, reset, test, and Boolean operation)
• BCD adjust, etc.
• Total
• CMOS input
• CMOS I/O
• N-ch open-drain I/O : 4
8-bit resolution
8-bit resolution
• 3-wire serial I/O/SBI/2-wire serial I/O mode selection possible : 1 channel
• 3-wire serial I/O mode (Max. 32-byte on-chip auto-transmit/receive) : 1 channel
• 3-wire serial I/O/UART mode selectable : 1 channel
• 16-bit timer/event counter : 1 channel
• 8-bit timer/event counter
• Watch timer
• Watchdog timer
Three outputs: (14-bit PWM output enable: 1)
19.5 kHz, 39.1 kHz, 78.1 kHz, 156 kHz, 313 kHz, 625 kHz, 1.25 MHz,
2.5 MHz, 5.0 MHz (@ 5.0 MHz with main system clock)
32.768 kHz (@ 32.768 kHz with subsystem clock)
1.2 kHz, 2.4 kHz, 4.9 kHz, 9.8 kHz (@ 5.0 MHz with main system clock)
PD78054 PD78P054 PD78055
Note 1
PROM Mask ROM
Note 3
1024 bytes 1024 bytes
Note 3
8 bits, 16 bits 8 bits)
: 69
: 2
: 63
8 channels
2 channels
: 2 channels
: 1 channel
: 1 channel
PD78056 PD78058 PD78P058
Note 2
PROM
Note 3
1024 bytes
Note 3
1024 bytes 1024 bytes
Note 4