NEC PD754244 Manuel D’Utilisation
CHAPTER 1 GENERAL
19
User’s Manual U10676EJ3V0UM
1.2 Ordering Information
Part Number
Package
µPD754141GS-×××-BA5
20-pin plastic SOP (7.62 mm (300))
µPD754141GS-×××-GJG
20-pin plastic SSOP (7.62 mm (300))
µPD754244GS-×××-BA5
20-pin plastic SOP (7.62 mm (300))
µPD754244GS-×××-GJG
20-pin plastic SSOP (7.62 mm (300))
Remark
××× indicates ROM code suffix.
1.3 Differences Between Series Products
Item
µ
PD754144
µ
PD754244
Instruction execution time
4, 8, 16, 64
µ
s (at f
CC
= 1.0 MHz)
• 0.95, 1.91, 3.81, 15.3
µ
s
(at f
X
= 4.19 MHz)
• 0.67, 1.33, 2.67, 10.7
µ
s
(at f
X
= 6.0 MHz)
System clock oscillator
RC oscillator
Crystal/ceramic oscillator
(resistors and capacitors are externally
provided)
Startup time after reset
Fixed to 56
µ
s (at 1 MHz)
Can be selected by mask option from
the following two:
• 2
17
/f
X
(31.3 ms: at 4.19 MHz,
21.8 ms: at 6.0 MHz)
• 2
15
/f
X
(7.81 ms: at 4.19 MHz,
5.46 ms: at 6.0 MHz)
Standby mode release time
2
9
/f
CC
Can be selected by BTM setting from
the following four:
2
20
/f
X
, 2
17
/f
X
, 2
15
/f
X
, 2
13
/f
X
Pin connection
pin 2, pin 3
CL1, CL2
X1, X2