參數(shù)資料
型號(hào)： UPD75306BGF
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(yè)數(shù)： 35/76頁(yè)
文件大?。?/td> 572K
代理商： UPD75306BGF
μ
PD75304B,75306B,75308B
35
8.
RESET FUNCTION
The
μ
PD75308B is reset and the hardware is initialized as shown in Table 8-1 by RESET input. The reset
operation timing is shown in Fig. 8-1.
Fig. 8-1 Reset Operation by RESET Input
Wait
(31.3 ms/4.19 MHz)
HALT Mode
Operating Mode
Internal Reset Operation
Operating Mode or Standby
Mode
RESET Input
Table 8-1 Status of Each Hardware after Resetting (1/2)
Hardware
Program counter (PC)
Carry flag (CY)
Skip flag (SK0 to 2)
PSW
Interrupt status flag (IST0)
Bank enable flag (MBE)
Stack pointer (SP)
Data memory (RAM)
General register
(X, A, H, L, D, E, B, C)
Bank selection register (MBS)
*
1.
Figures in parentheses apply to the
μ
PD75304B.
2.
Data of data memory addresses 0F8H to 0FDH becomes undefined by RESET input.
RESET Input in Standby
Mode
Low-order 5(4)
*1
bits of
program memory address
0000H are set in PC12(11)
*1
to 8 and the contents of
address 0001H are set in
PC7 to 0.
Held
0
0
Bit 7 of program memory
address 0000H is set in
MBE.
Undefined
Held
*2
Held
0
RESET Input during
Operation
Low-order 5(4)
*1
bits of
program memory address
0000H are set in
PC12(11)
*1
to 8 and the
contents of address 0001H
are set in PC7 to 0.
Undefined
0
0
Bit 7 of program memory
address 0000H is set in
MBE.
Undefined
Undefined
Undefined
0
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