SST89E58RD2-40-I-TQJE Microchip Technology, SST89E58RD2-40-I-TQJE Datasheet - Page 50

• Manufacturer Part Number: SST89E58RD2-40-I-TQJE
• Description: 4.5 To 5.5V FlashFlex 8-bit 8051 Microcontroller 44 TQFP 10x10x1mm TRAY
• Manufacturer: Microchip Technology
• Series: FlashFlex®r

Specifications of SST89E58RD2-40-I-TQJE

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 36
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 8K x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP
• Processor Series: FlashFlex51
• Core: C51
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 3
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Data Sheet
8.3 Compare/Capture Modules
Each PCA module has an associated SFR with it. These
registers are: CCAPM0 for module 0, CCAPM1 for module
1, etc. Refer to “PCA Compare/Capture Module Mode Reg-
ister (CCAPMn)” on page 30 for details. The registers each
contain 7 bits which are used to control the mode each
module will operate in. The ECCF bit (CCAPMn.0 where n
= 0, 1, 2, 3, or 4 depending on module) will enable the CCF
flag in the CCON SFR to generate an interrupt when a
match or compare occurs. PWM (CCAPMn.1) enables the
pulse width modulation mode. The TOG bit (CCAPMn.2)
when set, causes the CEX output associated with the mod-
ule to toggle when there is a match between the PCA
counter and the module’s capture/compare register. When
there is a match between the PCA counter and the mod-
ule’s capture/compare register, the MATn (CCAPMn.3) and
the CCFn bit in the CCON register to be set.
TABLE
©2008 Silicon Storage Technology, Inc.
Symbol
CCAP0H PCA Module 0
CCAP0L
CCAP1H PCA Module 1
CCAP1L
CCAP2H PCA Module 2
CCAP2L
CCAP3H PCA Module 3
CCAP3L
CCAP4H PCA Module 4
CCAP4L
8-4: PCA High and Low Register Compare/Capture Modules
Description
Compare/Capture
Registers
Compare/Capture
Registers
Compare/Capture
Registers
Compare/Capture
Registers
Compare/Capture
Registers
Address
Direct
EAH
EBH
FCH
ECH
FDH
EDH
EEH
FAH
FBH
FEH
MSB
Bit Address, Symbol, or Alternative Port Function
SST89E54RD2A/RDA / SST89E58RD2A/RDA
50
Bits CAPN (CCAPMn.4) and CAPP (CCAPMn.5) deter-
mine whether the capture input will be active on a positive
edge or negative edge. The CAPN bit enables the negative
edge that a capture input will be active on, and the CAPP
bit enables the positive edge. When both bits are set, both
edges will be enabled and a capture will occur for either
transition. The last bit in the register ECOM (CCAPMn.6)
when set, enables the comparator function. Table 8-5
shows the CCAPMn settings for the various PCA functions.
There are two additional register associated with each of
the PCA modules: CCAPnH and CCAPnL. They are regis-
ters that hold the 16-bit count value when a capture occurs
or a compare occurs. When a module is used in PWM
mode, these registers are used to control the duty cycle of
the output. See Figure 8-1.
CCAP0H[7:0]
CCAP1H[7:0]
CCAP2H[7:0]
CCAP3H[7:0]
CCAP4H[7:0]
CCAP0L[7:0]
CCAP1L[7:0]
CCAP2L[7:0]
CCAP3L[7:0]
CCAP4L[7:0]
FlashFlex MCU
LSB
S71339-02-000
RESET
Value
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
T8-4.0 1339
02/08