CY7C63723-SXC Cypress Semiconductor Corp, CY7C63723-SXC Datasheet - Page 25
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CY7C63723-SXC
Manufacturer Part Number
CY7C63723-SXC
Description
IC MCU 8K LS USB/PS-2 18-SOIC
Manufacturer
Cypress Semiconductor Corp
Series
enCoRe™r
Specifications of CY7C63723-SXC
Applications
USB Microcontroller
Core Processor
M8B
Program Memory Type
OTP (8 kB)
Controller Series
CY7C637xx
Ram Size
256 x 8
Interface
PS2, USB
Number Of I /o
10
Voltage - Supply
4 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
18-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
428-1720-5
CY7C63723-SXC
CY7C63723-SXC
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C63723-SXC
Manufacturer:
NS
Quantity:
16
Part Number:
CY7C63723-SXC
Manufacturer:
CYPRESS/赛普拉斯
Quantity:
20 000
12-bit Free-running Timer
The 12-bit timer operates with a 1-μs tick, provides two interrupts
(128-μs and 1.024-ms) and allows the firmware to directly time
events that are up to 4 ms in duration. The lower eight bits of the
timer can be read directly by the firmware. Reading the lower
eight bits latches the upper four bits into a temporary register.
When the firmware reads the upper four bits of the timer, it is
actually reading the count stored in the temporary register. The
effect of this is to ensure a stable 12-bit timer value can be read,
even when the two reads are separated in time.
Figure 24. Timer LSB Register (Address 0x24)
Document #: 38-08022 Rev. *D
Read/Write
Bit Name
Reset
Bit #
R
7
0
11
L3
D3
R
6
0
10
L2
D2
R
5
0
9
L1
D1
Timer [7:0]
R
4
0
8
L0
D0
R
3
0
7
D7
R
2
0
6
Figure 26. Timer Block Diagram
D6
R
1
0
5
D5
R
0
0
4
D4
3
Bit [7:0]: Timer lower eight bits
Figure 25. Timer MSB Register (Address 0x25)
Bit [7:4]: Reserved
Bit [3:0]: Timer upper four bits
Read/Write
D3
Bit Name
Reset
Bit #
2
D2
1
D1
7
0
-
8
0
D0
Reserved
6
0
-
5
0
-
1.024-ms interrupt
128-
1 MHz clock
To Timer Registers
4
0
-
μ
s interrupt
R
3
0
CY7C63722C
CY7C63723C
CY7C63743C
Timer [11:8]
R
2
0
Page 25 of 53
R
1
0
R
0
0
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