C8051T617-GM Silicon Laboratories Inc, C8051T617-GM Datasheet - Page 196

• Manufacturer Part Number: C8051T617-GM
• Description: IC 8051 MCU 16K BYTE-PROG 24-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051T61xr

Specifications of C8051T617-GM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: OTP
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Other names: 336-1438-5

C8051T610/1/2/3/4/5/6/7
26.3.3. High-Speed Output Mode
In High-Speed Output mode, a module’s associated CEXn pin is toggled each time a match occurs
between the PCA Counter and the module's 16-bit capture/compare register (PCA0CPHn and
PCA0CPLn). When a match occurs, the Capture/Compare Flag (CCFn) in PCA0CN is set to logic 1. An
interrupt request is generated if the CCFn interrupt for that module is enabled. The CCFn bit is not auto-
matically cleared by hardware when the CPU vectors to the interrupt service routine, and must be cleared
by software. Setting the TOGn, MATn, and ECOMn bits in the PCA0CPMn register enables the High-
Speed Output mode. If ECOMn is cleared, the associated pin will retain its state, and not toggle on the next
match event.
Important Note About Capture/Compare Registers: When writing a 16-bit value to the PCA0 Cap-
ture/Compare registers, the low byte should always be written first. Writing to PCA0CPLn clears the
ECOMn bit to 0; writing to PCA0CPHn sets ECOMn to 1.
196
PCA0CPLn
Write to
Reset
PCA0CPHn
Write to
0
ENB
ENB
Figure 26.6. PCA High-Speed Output Mode Diagram
1
PCA
Timebase
Enable
P
W
M
1
6
n
x
C
O
M
E
n
PCA0CPLn
PCA0CPMn
C
A
P
P
n
0 0
PCA0L
C
N
A
P
n
16-bit Comparator
M
A
T
n
O
G
T
n
W
M
P
n
0 x
E
C
C
F
n
PCA0CPHn
PCA0H
Rev 1.0
Match
Toggle
C
TOGn
F
0
1
C
R
PCA0CN
0
1
C
C
F
4
CEXn
C
C
F
3
C
C
F
2
C
C
F
1
PCA Interrupt
C
C
F
0
Crossbar
Port I/O