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CY7C63823-SXCT Datasheet(PDF) 8 Page - Cypress Semiconductor

Part # CY7C63823-SXCT
Description  enCoRe??II Low Speed USB Peripheral Controller
Download  86 Pages
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C63823-SXCT Datasheet(HTML) 8 Page - Cypress Semiconductor

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CY7C63310, CY7C638xx
Document 38-08035 Rev. *N
Page 8 of 86
6. CPU Architecture
This family of microcontrollers is based on a high performance,
8-bit, Harvard architecture microprocessor. Five registers control
the primary operation of the CPU core. These registers are
affected by various instructions, but are not directly accessible
through the register space by the user.
The 16-bit Program Counter Register (CPU_PC) allows direct
addressing of the full 8 Kbytes of program memory space.
The Accumulator Register (CPU_A) is the general purpose
register, which holds the results of instructions that specify any
of the source addressing modes.
The Index Register (CPU_X) holds an offset value that is used
in the indexed addressing modes. Typically, this is used to
address a block of data within the data memory space.
The Stack Pointer Register (CPU_SP) holds the address of the
current top of the stack in the data memory space. It is affected
by the PUSH, POP, LCALL, CALL, RETI, and RET instructions,
which manage the software stack. It is also affected by the SWAP
and ADD instructions.
The Flag Register (CPU_F) has three status bits: Zero Flag bit
[1]; Carry Flag bit [2]; Supervisory State bit [3]. The Global
Interrupt Enable bit [0] globally enables or disables interrupts.
The user cannot manipulate the Supervisory State status bit [3].
The flags are affected by arithmetic, logic, and shift operations.
The manner in which each flag is changed is dependent upon
the instruction being executed, such as AND, OR, XOR, and
others. See Table 8-1 on page 13.
2
4
4
3
8
2
6
P0.5/TIO0 GPIO Port 0 bit 5. Configured individually
Alternate function Timer capture inputs or Timer
output TIO0
1
3
3
2
7
1
5
P0.6/TIO1 GPIO Port 0 bit 6. Configured individually
Alternate function Timer capture inputs or Timer
output TIO1
32
2
2
1
6
P0.7
GPIO Port 0 bit 7
. Configured individually
Not present in the 16 pin PDIP or SOIC package
10
1
1
NC
No connect
11
12
24
NC
No connect
12
NC
No connect
17
NC
No connect
19
NC
No connect
27
NC
No connect
28
NC
No connect
29
NC
No connect
30
NC
No connect
31
NC
No connect
16
16
15
12
17
11
15
Vcc
Supply
13
13
12
9
14
8
12
VSS
Ground
Table 5-2. Pin Description
(continued)
32
QFN
24
QSOP
24
SOIC
18
SIOC
18
PDIP
16
SOIC
16
PDIP
Name
Description
Table 6-1. CPU Registers and Register Names
CPU Register
Register Name
Flags
CPU_F
Program Counter
CPU_PC
Accumulator
CPU_A
Stack Pointer
CPU_SP
Index
CPU_X
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