NEC PD754144 - Manual (Page 19)

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 µPD754144 µPD754244
Instruction execution time 4, 8, 16, 64 µs (at f
CC
= 1.0 MHz) • 0.95, 1.91, 3.81, 15.3 µs
(at f X = 4.19 MHz)
• 0.67, 1.33, 2.67, 10.7
µs
(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
µs (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