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參數(shù)資料
| 型號： | UPD75048 |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCOMPUTER |
| 中文描述： | 4位單片機(jī) |
| 文件頁數(shù)： | 2/68頁 |
| 文件大?。?/td> | 538K |
| 代理商： | UPD75048 |
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2
μ
PD75048
FUNCTIONAL OUTLINE
Item
Function
Instructions
Instruction Exe-
cution Time
41
With main system clock: 0.95, 1.91, 15.3
μ
s (at 4.19 MHz)
With subsystem clock: 122
μ
s (at 32.768 kHz)
Program memory (ROM) : 8064 x 8 bits
Internal Memory
Data memory (RAM)
Data memory (EEPROM) : 1024 x 4 bits
Retains data in case of power failure
Number of writes: 100,000 times
Write time: 10 ms
Write end, overwrite interrupt functions
4-bit manipulation: 8 (X, A, B, C, D, E, H, L)
8-bit manipulation: 4 (XA, BC, DE, HL)
Bit accumulator (CY)
4-bit accumulator (A)
8-bit accumulator (XA)
: 512 x 4 bits
EEPROM
General-Purpose
Register
Accumulator
Abundant bit manipulation instructions
Efficient 4-bit data manipulation instructions
8-bit data manipulation instructions
GETI instruction executing 2-/3-byte instruction with a single byte
12
Input pin
Instruction Set
Via software,
w/pull-up resistor: 27
w/pull-down resistor: 4
24
CMOS I/O pin (direct LED drive: 4)
I/O Line
48
12
Medium-voltage N-ch
open-drain I/O (direct LED drive)
By mask option,
w/pull-up resistor: 12
8-bit timer/event counter
Clock source: 4 steps
Can count events
8-bit basic interval timer
Reference time generation: 1.95, 7.82, 31.3, 250 ms (at 4.19 MHz)
Can be used as watchdog timer
Clock timer
Generates 0.5-second time intervals
Count clock source: main system clock or subsystem clock (selectable)
Clock fast forward mode (generates 3.9-ms time intervals)
Buzzer output (2, 4, 32 kHz)
Multi-function timer
Can be used as:
8-bit timer
PWM output
16-bit free-running timer
Counter for 16-bit integral A/D converter
Three modes:
3-line serial I/O mode ... MSB/LSB first (selectable)
2-line serial I/O mode
SBI mode
Timer
4 chs
8-bit Serial
Interface
Bit Sequential
Buffer
Special bit manipulation memory: 16 bits
Ideal for remote controller
Timer/event counter output (PTO0): output of square wave at specified frequency
Clock output (PCL):
Φ
/, f
x
/2
3
, f
x
/2
4
, f
x
/2
6
Buzzer output (BUZ): 2, 4, 32 kHz (with main system clock or subsystem clock)
Clock Output
Function
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