Z8E520 Datasheet, PDF (2/43 Pages) Zilog, Inc. – 1.5 MBPS USB Device Controller

Z8E520/C520
1.5 MBPS USB Device Controller
GENERAL DESCRIPTION (Continued)
Power connections follow conventional descriptions at
right:
Connection
Power
Ground
Circuit
V_CC
GND
Zilog
Device
V_DD
V_SS
Port B
(6–7)
ZIE
Two 8-bit Timers
or
One 16-bit PWM
Timer
One 16-bit
Std. Timer
Interrupt
Control
6 Analog
Comparators
V_CC GND
ALU
FLAG
Register
Pointer
RAM
Register File
(160 Bytes)
Ceramic Resonator
Machine Timing
& Inst. Control
6 K Bytes
Prg. Memory
Program
Counter
WDT
Port A
Port B
I/O
I/O
Figure 1. Z8E520 Functional Block Diagram
INTERNAL
RC OSC
2
PRELIMINARY
DS97KEY2005