CY7C66113-PVC Cypress Semiconductor Corp, CY7C66113-PVC Datasheet - Page 14

• Manufacturer Part Number: CY7C66113-PVC
• Description: IC MCU 8K USB HUB 4 PORT 56TSSOP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C66113-PVC

• Applications: USB Hub/Microcontroller
• Core Processor: M8
• Program Memory Type: OTP (8 kB)
• Controller Series: USB Hub
• Ram Size: 256 x 8
• Interface: I²C, USB, HAPI
• Number Of I /o: 31
• Voltage - Supply: 4 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 56-SSOP
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 56
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: CY3649 - PROGRAMMER HI-LO USB M8428-1339 - KIT LOW SPEED PERSONALITY BOARD
• Lead Free Status / RoHS Status: Not Compliant, Contains lead / RoHS non-compliant
• Other names: 428-1330

CY7C66013
CY7C66113
5.0
Programming Model
5.1
14-bit Program Counter (PC)
The 14-bit Program Counter (PC) allows access to up to 8 KB of PROM available with the CY7C66x13 architecture. The top 32
bytes of the ROM in the 8K part are reserved for testing purposes. The program counter is cleared during reset, such that the
first instruction executed after a reset is at address 0x0000h. Typically, this is a jump instruction to a reset handler that initializes
the application (see Section 16.1, Interrupt Vectors, on page 30).
The lower eight bits of the program counter are incremented as instructions are loaded and executed. The upper six bits of the
program counter are incremented by executing an XPAGE instruction. As a result, the last instruction executed within a 256-byte
“page” of sequential code should be an XPAGE instruction. The assembler directive “XPAGEON” causes the assembler to insert
XPAGE instructions automatically. Because instructions can be either one or two bytes long, the assembler may occasionally
need to insert a NOP followed by an XPAGE to execute correctly.
The address of the next instruction to be executed, the carry flag, and the zero flag are saved as two bytes on the program stack
during an interrupt acknowledge or a CALL instruction. The program counter, carry flag, and zero flag are restored from the
program stack during a RETI instruction. Only the program counter is restored during a RET instruction.
The program counter cannot be accessed directly by the firmware. The program stack can be examined by reading SRAM from
location 0x00 and up.
Document #: 38-08024 Rev. *A
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