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39
CHAPTER 1 OUTLINE
User’s Manual U15798EJ2V0UD
1.7 Outline of Function
(1/2)
Part Number
µ
PD780343
µ
PD780344
µ
PD780353
µ
PD780354
µ
PD78F0354
Item
µ
PD780343Y
µ
PD780344Y
µ
PD780353Y
µ
PD780354Y
µ
PD78F0354Y
Internal
ROM
24 KB
32 KB
24 KB
32 KB
32 KB
Note 1
memory
(mask ROM)
(mask ROM)
(mask ROM)
(mask ROM)
(flash memory)
High-speed RAM
512 bytes
1,024 bytes
Expansion RAM
512 bytes
LCD display RAM
40
×
8 bits
Memory space
64 KB
General-purpose registers
8 bits
×
32 registers (8 bits
×
8 registers
×
4 banks)
Minimum instruction execution time
Function to change minimum instruction execution time provided
When main system
0.2
µ
s/0.4
µ
s/0.8
µ
s/1.6
µ
s/3.2
µ
s (@V
DD
= 5 V, f
X
= 10 MHz)
clock selected
When subsystem
122
µ
s (@f
XT
= 32.768 kHz)
clock selected
30.52
µ
s (@f
XT
= 32.768 kHz (131 kHz) with
×
4 multiplication clock)
Subsystem clock multiplication
×
4 multiplication circuit (operating supply voltage: V
DD
= 2.7 to 5.5 V)
Note 2
function
Instruction set
• 16-bit operation
• Multiply/divide (8 bits
×
8 bits, 16 bits
÷
8 bits)
• Bit manipulate (set, reset, test, and Boolean operation)
• BCD adjust, etc.
I/O port
66
CMOS input
8
CMOS I/O
52
Note 3
N-ch open-drain I/O
6 (Middle withstand voltage: 4)
A/D converter
• 8-bit resolution
×
8 channels
• 10-bit resolution
×
8 channels
• Voltage operation:
• Voltage operation: AV
DD
= 2.2 to 5.5 V
AV
DD
= 2.2 to 5.5 V
LCD controller/driver
• LCD reference voltage generator: booster type (
×
3 only)
• Blinking display possible (blinking interval can be selected: 0.5 s or 1 s)
• Static display and dynamic display (1/3 bias only) can be used simultaneously
(Static display up to 12 segments)
Segment signal outputs
40 max.
Note 3
Common signal outputs
4 max. (dynamic display), 1 (static display)
Serial interface
• 3-wire serial I/O mode (SIO3):
1 channel
• 3-wire serial I/O mode (CSI1):
1 channel
• UART:
1 channel
• I
2
C bus:
1 channel (
µ
PD780344Y, 780354Y Subseries only)
Notes 1.
The capacity of the on-chip flash memory can be changed by means of the memory size switching
register (IMS).
2.
Whether a circuit to multiply the clock by 4 is used or not is selected by the subclock select register
(SSCK).
3.
28 pins are used either as a port function or LCD segment output selected by the pin function switching
register.
Содержание mPD780344 Series
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