W78E54-16 Winbond, W78E54-16 Datasheet - Page 5

• Manufacturer Part Number: W78E54-16
• Description: 8-BIT MICROCONTROLLER
• Manufacturer: Winbond

XTAL2
V
Power Supplies. These are the chip ground and positive supplies.
BLOCK DIAGRAM
SS
Normal
Normal
MODE
Flash
Flash
, V
CC
Crystal 1. This is the crystal oscillator input. This pin may be driven by an external
clock.
Connect to V
Crystal 2. This is the crystal oscillator output. It is the inversion of XTAL1.
No function in this mode.
SS
.
DESCRIPTION
- 5 -
Publication Release Date: November 1997
W78E54
Revision A2