UPD77015GC NEC, UPD77015GC Datasheet - Page 36
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UPD77015GC
Manufacturer Part Number
UPD77015GC
Description
16 bits/ Fixed-point Digital Signal Processor
Manufacturer
NEC
Datasheet
1.UPD77015GC.pdf
(60 pages)
- Current page: 36 of 60
- Download datasheet (425Kb)
Recommended Oscillator Circuit Constants
Reset, Interrupt
Required Timing Condition
Note 1. The t
36
Ceramic Resonator
Crystal Resonator
RESET low level width
RESET recovery time
INT1-INT4 low level width
INT1-INT4 recovery time
Remark Recommended oscillator circuit constants may differ on the wiring capacitance of the target board
2. Note that, during HALT mode, t
becomes stable. The t
t
Parameters
w(RL)
the customer designed. When using a resonator for the target system, let manufacturer evaluate.
w(RL)
is measured after the point that power supply voltage reaches to 0.8 V
indicates a time between crystal resonator or oscillator starts to provide clock and PLL
Manufacturer Name
TDK
MURATA
Manufacturing
DAISHINKU
Symbol
t
t
t
t
w(RL)
W(RL)
rec(R)
W(INTL)
rec(INT)
depends on the rating of crystal resonator or oscillator. At power on, the
Crystal resonator is input,
at power on or STOP mode
External clock is input,
at power on or STOP mode
Active mode or HALT mode
CCR33.0MC6
CSA33.00MXZ040
CST33.00MXW040
CSACV33.00MX040
CSTCV33.00MX040
AT-49
DSX840G
cC
is extended to 8 times as long as that of Active mode.
Part Number
Conditions
Frequency (MHz)
33.0
100
4t
3t
3
cC
cC
MIN.
Note 1
4t
3t
Note 2
Note 2
Note 1
cC
cC
PD77015, 77017, 77018
Recommended Constants
C1 [pF]
TYP.
10
5
5
DD
.
Internal
Internal
Internal
MAX.
C2 [pF]
10
5
5
Unit
ms
ns
ns
ns
ns
s
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