CY7C64013-SC Cypress Semiconductor Corp, CY7C64013-SC Datasheet - Page 22

• Manufacturer Part Number: CY7C64013-SC
• Description: IC MCU 8K FULL SPEED USB 28SOIC
• Manufacturer: Cypress Semiconductor Corp
• Series: M8™r

Specifications of CY7C64013-SC

• Applications: USB Microcontroller
• Core Processor: M8C
• Program Memory Type: OTP (8 kB)
• Controller Series: CY7C640xx
• Ram Size: 256 x 8
• Interface: I²C, USB, HAPI
• Number Of I /o: 19
• Voltage - Supply: 4 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• For Use With: 428-1339 - KIT LOW SPEED PERSONALITY BOARD
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1327

The amount of sink current for the DAC I/O pin is programmable over 16 values based on the contents of the DAC Isink Register
for that output pin. DAC[1:0] are high-current outputs that are programmable from 3.2 mA to 16 mA (typical). DAC[7:2] are low-
current outputs, programmable from 0.2 mA to 1.0 mA (typical).
When the suspend bit in Processor Status and Control Register (see Figure 15-1) is set, the Isink DAC block of the DAC circuitry
is disabled. Special care should be taken when the CY7C64x13 device is placed in the suspend mode. The DAC Port Data
Register (see Figure 10-2) should normally be loaded with all ‘1’s (0xFF) before setting the suspend bit. If any of the DAC bits
are set to ‘0’ when the device is suspended, that DAC input will float. The floating pin could result in excessive current consumption
by the device, unless an external load places the pin in a deterministic state.
DAC Port Data
Bit [1..0]: High Current Output 3.2 mA to 16 mA typical
Bit [3..2]: Low Current Output 0.2 mA to 1 mA typical
10.1
Each DAC I/O pin has an associated DAC Isink register to program the output sink current when the output is driven LOW. The
first Isink register (0x38) controls the current for DAC[0], the second (0x39) for DAC[1], and so on until the Isink register at 0x3F
controls the current to DAC[7].
DAC Sink Register
Document #: 38-08001 Rev. *A
Bit #
Bit Name
Read/Write
Reset
Bit #
Bit Name
Read/Write
Reset
1= I/O pin is an output pulled HGH through the 14-kΩ resistor. 0 = I/O pin is an input with an internal 14-kΩ pull-up resistor
1= I/O pin is an output pulled HGH through the 14-kΩ resistor. 0 = I/O pin is an input with an internal 14-kΩ pull-up resistor
DAC Isink Registers
Reserved
Internal
Data Bus
DAC[7]
R/W
7
1
7
-
Interrupt
Enable
Interrupt
Polarity
Reserved
Reserved
R/W
Internal
Buffer
6
1
6
-
DAC Read
DAC Write
Data
Out
Latch
Figure 10-1. Block Diagram of a DAC Pin
Reserved
Reserved
Suspend
(Bit 3 of Register 0xFF)
Figure 10-3. DAC Sink Register
R/W
5
1
5
Figure 10-2. DAC Port Data
-
Isink
Register
4 bits
Reserved
Reserved
R/W
4
1
4
-
Isink
DAC
to Interrupt
Controller
V
Reserved
CC
Isink[3]
Q1
R/W
14 kΩ
W
3
1
3
0
DAC[2]
Isink[2]
R/W
W
2
1
2
0
I/O Pin
DAC
DAC[1]
Isink[1]
R/W
W
1
1
1
0
CY7C64013
CY7C64113
ADDRESS 0x38 -0x3F
Page 22 of 51
ADDRESS 0x30
DAC[0]
Isink[0]
R/W
W
0
1
0
0