W65C816S Datasheet, PDF (11/62 Pages) List of Unclassifed Manufacturers – Microprocessor

The Western Design Center, Inc.
AO-A7
INDEX X
(16 BITS)
INDEX Y
(16 BITS)
STACK POINTER
(S) (16 BITS)
ALU
(16 BITS)
TRANSFER
SWITCHES
W65C816S Data Sheet
INTERUPT
LOGIC
VDD
VSS
ABORTB
IRQB
NMIB
RESB
TIMING
CONT.
RDY
A8-A15
DO-D7 (816)
ACCUMULATOR
(C) (16 BITS)
(A) (8 BITS)
(B) (8 BITS)
CLOCK
GEN-
ERATOR
PROG. COUNTER
(PC) (16 BITS)
DIRECT (D)
(16 BITS)
PROG. BANK (PBR)
(8 BITS)
DATA BANK (DBR)
(8 BITS)
DATA
LATCH/
PREDECODE
PREDECODE
PROCESSOR
STATUS (P)
(8 BITS)
INSTRUCTION REGISTER
(8 BITS)
SYSTEM
CONT.
BE
Figure 2-1W65C816S Internal Architecture Simplified Block Diagram
PHI2
RWB
VPA
VDA
MLB
VPB
E
MX
The Western Design Center
W65C816S
11