Renesas PROM Programming Adapter PCA7408 Manual de usuario Pagina 75
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M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Rev.1.00 Oct 01, 2002 page 75 of 110
REJ03B0134-0100Z
8.13. RESET CIRCUIT
When the oscillation of a quartz-crystal oscillator or a ceramic reso-
nator is stable and the power source voltage is 5 V ± 10 %, hold the
RESET pin at LOW for 2 µs or more, then return to HIGH. Then, as
shown in Figure 8.13.2, reset is released and the program starts from
the address formed by using the content of address FFFF16 as the
high-order address and the content of the address FFFE16 as the
low-order address. The internal states of the microcomputer at reset
are shown in Figures 8.2.3 to 8.2.6.
An example of the reset circuit is shown in Figure 8.13.1.
The reset input voltage must be kept 0.6 V or less until the power
source voltage surpasses 4.5 V.
Fig. 8.13.2 Reset Sequence
Fig. 8.13.1 Example of Reset Circuit
P
o
w
e
r
s
o
u
r
c
e
v
o
l
t
a
g
e
0
V
Reset input voltage 0
V
4
.
5
V
0
.
6
V
P
o
w
e
r
o
n
V
c
c
R
E
S
E
T
V
s
s
Microcomputer
1
5
4
3
0
.
1
µF
M
5
1
9
5
3
A
L
X
I
N
φ
R
E
S
E
T
I
n
t
e
r
n
a
l
R
E
S
E
T
S
Y
N
C
A
d
d
r
e
s
s
D
a
t
a
3
2
7
6
8
c
o
u
n
t
o
f
X
I
N
c
l
o
c
k
c
y
c
l
e
(
S
e
e
n
o
t
e
3
)
Reset address from the vector table
?
?
0
1
,
S
01, S-1
01, S-2
F
F
F
E
F
F
F
F
AD
H
,
AD
L
? ? ? ? ?
AD
L
A
D
H
Notes 1 : f(X
IN
) and f(φ) are in the relation : f(X
IN
) = 2·f (φ).
2 : A question mark (?) indicates an undefined state that
depends on the previous state.
3 : Immediately after a reset, timer 3 and timer 4 are
connected by hardware. At this time, “FF
16
” is set
in timer 3 and “07
16
” is set to timer 4. Timer 3 counts down
with f(X
IN
)/16, and reset state is released by the timer 4
overflow signal.
- 1. DESCRIPTION 0
- 2. FEATURES 0
- 3. APPLICATION 0
- REJ03B0134-0100Z 1
- Address 00E016 2
- Addresses 00DE16 and 00DF16 2
- Addresses 00E116 and 00E216 3
- Address 00E416 3
- Addresses 00E616 to 00E916 4
- Address 00E516 4
- Address 00EA16 5
- Addresses 00EC16 5
- Address 00ED16 6
- Addresses 00EE16 6
- Address 00EF16 7
- Addresses 00F416 7
- Address 00F516 8
- Addresses 00F916 8
- Address 00FB16 9
- Addresses 00FC16 9
- Address 00FD16 10
- Addresses 00FE16 10
- Address 00FF16 11
- Addresses 021B16 11
- 42P2R-A/E 13
- REVISION HISTORY 14
- RENESAS SALES OFFICES 15
- 8. FUNCTION BLOCK DESCRIPTION 16
- 8.1.1 CPU Mode Register 16
- RCR1 RCR0 21
- TABLE OF CONTENTS 24
- (4) Serial I/O interrupt 25
- (5) f(XIN)/4096 interrupt 25
- (6) Multi-master I 25
- C-BUS interface interrupt 25
- (7) BRK instruction interrupt 25
- 8.4 TIMERS 29
- 8.4.1 Timer 1 29
- 8.4.2 Timer 2 29
- 8.4.3 Timer 3 29
- 8.4.4 Timer 4 29
- Timer 34 Mode Register 30
- 8.5 SERIAL I/O 32
- 16), and the transfer 33
- OUT pin. Transfer 33
- 4. PIN CONFIGURATION 35
- Outline 42P4B 35
- Outline 42P2R-A/E 35
- 8.6 MULTI-MASTER I 37
- C-BUS INTERFACE 37
- C Data Shift Register 38
- C Address Register 39
- 16) is used to set ACK 40
- C Control Register 42
- (1) 7-bit addressing format 47
- (2) 10-bit addressing format 47
- (5) Writing to I 50
- C status register 50
- 8.8 A-D COMPARATOR 56
- 5. FUNCTIONAL BLOCK DIAGRAM 57
- 8.9 D-A CONVERTER 59
- 8.10 ROM CORRECTION FUNCTION 61
- 8.11 OSD FUNCTIONS 62
- OSD Control Register 65
- 8.11.1 Display Position 66
- 6. PERFORMANCE OVERVIEW 68
- Vertical Position Register i 69
- Horizontal Position Register 70
- 8.11.2 Character Size 71
- 8.11.3 Clock for OSD 73
- 8.11.4 Memory for OSD 74
- Border Selection Register 80
- 8.11.7 Multiline Display 81
- 8.11.8 OSD Output Pin Control 82
- 8.13. RESET CIRCUIT 85
- 8.14 CLOCK GENERATING CIRCUIT 86
- 8.17 ADDRESSING MODE 87
- 8.18 MACHINE INSTRUCTIONS 87
- 9. TECHNICAL NOTES 87
- 8.16 AUTO-CLEAR CIRCUIT 87
- 10. ABSOLUTE MAXIMUM RATINGS 88
- 7. PIN DESCRIPTION 90
- + Power source voltage 91
- 15. MULTI-MASTER I 92
- 16. PROM PROGRAMMING METHOD 93
- M37221EASP 95
- M37221EAFP 95
- 19. APPENDIX 96
- Pin Configuration (TOP VIEW) 96
- Memory Map 98
- Register (SFR) 100
- Program Counter at Reset 104
- Structure of Register 105
- Address 00C716 106
- Address 00CB16 107
- Address 00CD16 107
- Address 00D516 108
- Address 00D616 108
- Address 00D816 109
- Address 00D716 109
- Address 00D916 110
- Address 00DA16 110
- Address 00DB16 111
- Address 00DC16 111
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