Cypress Semiconductor CY8C24094 Manual de usuario descargar pdf (Pagina 5)

CY8C24094, CY8C24794

CY8C24894, CY8C24994

Document Number: 38-12018 Rev. AD Page 5 of 61

4.4 Additional System Resources

System resources provide additional capability useful to

complete systems. Additional resources include a multiplier,

decimator, low-voltage detection, and power-on reset (POR).

Brief statements describing the merits of each resource follow.

■ Full speed USB (12 Mbps) with five configurable endpoints and

256 bytes of RAM. No external components required except

for two series resistors. Wider than commercial temperature

USB operation (–10 °C to +85 °C).

■ Digital clock dividers provide three customizable clock

frequencies for use in applications. The clocks can be routed

to both the digital and analog systems. Additional clocks are

generated using digital PSoC blocks as clock dividers.

■ Two multiply accumulates (MACs) provide fast 8-bit multipliers

with 32-bit accumulate, to assist in both general math and

digital filters.

■ Decimator provides a custom hardware filter for digital signal

processing applications including creation of Delta Sigma

ADCs.

■ The I

C module provides 100- and 400-kHz communication

over two wires. Slave, master, multi-master are supported.

■ Low-voltage detection interrupts signal the application of falling

voltage levels, while the advanced POR circuit eliminates the

need for a system supervisor.

■ An internal 1.3-V reference provides an absolute reference for

the analog system, including ADCs and DACs.

■ Versatile analog multiplexer system.

4.5 PSoC Device Characteristics

Depending on your PSoC device characteristics, the digital and analog systems can have 16, 8, or 4 digital blocks and 12, 6, or 4

analog blocks. The following table lists the resources available for specific PSoC device groups. The device covered by this datasheet

is shown in the highlighted row of the table.

Table 1. PSoC Device Characteristics

PSoC Part

Number

Digital

I/O

Digital

Rows

Digital

Blocks

Analog

Inputs

Analog

Outputs

Analog

Columns

Analog

Blocks

SRAM

Size

Flash

Size

CY8C29x66 up to 64 4 16 up to 12 4 4 12 2 K 32 K

CY8C28xxx up to 44 up to 3 up to 12 up to 44 up to 4 up to 6 up to

12 + 4

[1]

1 K 16 K

CY8C27x43 up to 44 2 8 up to 12 4 4 12 256 16 K

CY8C24x94 up to 56 1 4 up to 48 2 2 6 1 K 16 K

CY8C24x23A up to 24 1 4 up to 12 2 2 6 256 4 K

CY8C23x33 up to 26 1 4 up to 12 2 2 4 256 8 K

CY8C22x45 up to 38 2 8 up to 38 0 4 6

[1]

1 K 16 K

CY8C21x45 up to 24 1 4 up to 24 0 4 6

[1]

512 8 K

CY8C21x34 up to 28 1 4 up to 28 0 2 4

[1]

512 8 K

CY8C21x23 up to 16 1 4 up to 8 0 2 4

[1]

256 4 K

CY8C20x34 up to 28 0 0 up to 28 0 0 3

[1,2]

512 8 K

CY8C20xx6 up to 36 0 0 up to 36 0 0 3

[1,2]

up to

2 K

up to

32 K

Notes

1. Limited analog functionality.

2. Two analog blocks and one CapSense

1 2 3 4 5 6 7 8 9 10 ... 60 61

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