參數(shù)資料
型號： UPD75104
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機
文件頁數(shù)： 33/70頁
文件大小： 535K
代理商： UPD75104
μ
PD75104, 75106, 75108
33
Table 8-1 Hardware Device Status After Reset
RESET input during
standby mode
Power-ON Reset or RESET
Input during Operation
Lower 4 bits of program
memory address 000H are
set to PC
12-8
,*
1
and
contents of address 001H
are set to PC
7-0
.
Lower 4 bits of program
memory address 000H are
set to PC
12-8
,*
1
and
contents of address 001H
are set to PC
7-0
.
Program Counter (PC)
Carry Flag (CY)
Retained
Undefined
Skip Flags (SK0-SK2)
0
0
PSW
Interrupt Status Flags (IST0, 1)
0
0
Bit 6 of program memory
address 000H is set in
RBE, and bit 7 is set in
MBE.
Bit 6 of program memory
address 000H is set in
RBE, and bit 7 is set in
MBE.
Bank Enable Flags (MBE, RBE)
Stack Pointer (SP)
Undefined
Undefined
Data Memory (RAM)
Retained*
2
Undefined
General-Purpose Registers (X,A,H,L,D,E,B,C)
Retained
Undefined
Bank Selector Registers (MBS, RBS)
0, 0
0, 0
Counter (BT)
Undefined
Undefined
Mode Register (BTM)
0
0
Counter (Tn)
0
0
Modulo Register (TMODn)
FFH
FFH
Mode Register (TMn)
0
0
TOEn, TOFn
0, 0
0, 0
Serial Interface
Shift Register (SIO)
Retained
Undefined
Mode Register (SIOM)
0
0
Processor Clock Control Register
(PCC)
0
0
Clock Output Mode Register
(CLOM)
0
0
Interrupt Request Rlags
(IRQxxx)
Reset (0)
Reset (0)
Interrupt Enable Flags (IExxx)
0
0
Interrupt
Priority Selector Register (IPS)
0
0
INT0, 1 Mode Registers
(IM0, IM1)
0, 0
0, 0
Output Buffer
OFF
OFF
Digital Port
Output Latch
Cleared (0)
Cleared (0)
I/O Mode Registers
(PMGA, PMGB, PMGC)
0
0
PTH00-PTH03 Input Latches
Undefined
Undefined
Analog Port
Mode Register (PTHM)
0
0
Power-ON Flag (PONF)
Retained
1 or undefined*
2
Bit Sequential Buffer (BSB0-BSB3)
0
0
*1: PC
11-8
for
μ
PD75104
2: Power-ON reset: 1
RESET
input during operation: undefined
Note:
Data at data memory addresses 0F8H to 0FDH become undefined when the
RESET
signal has been input.
Hardware
Basic interval timer
Timer/Event Counter
(n = 0, 1)
Clock Generator Circuit,
Clock Output Circuit
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