SST89E58RD2-40-I-NJE Microchip Technology, SST89E58RD2-40-I-NJE Datasheet - Page 28

• Manufacturer Part Number: SST89E58RD2-40-I-NJE
• Description: 4.5 To 5.5V FlashFlex 8-bit 8051 Microcontroller 44 PLCC TUBE
• Manufacturer: Microchip Technology
• Series: FlashFlex®r

Specifications of SST89E58RD2-40-I-NJE

• 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-LCC (J-Lead)
• 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
Watchdog Timer Data/Reload Register (WDTD)
PCA Timer/Counter Control Register
©2008 Silicon Storage Technology, Inc.
Location
Location
D8H
85H
Symbol
WDTD
Symbol
CF
CR
-
CCF4
CCF3
CCF2
CCF1
CCF0
1. Bit addressable
CF
7
7
CR
6
Function
Initial/Reload value in Watchdog Timer. New value won’t be effective until WDT is set.
6
Function
PCA Counter Overflow Flag
Set by hardware when the counter rolls over. CF flags an interrupt if bit ECF in CMOD
is set. CF may be set by either hardware or software, but can only cleared by software.
PCA Counter Run control bit
Set by software to turn the PCA counter on. Must be cleared by software to turn the
PCA counter off.
Not implemented, reserved for future use.
Note: User should not write ‘1’s to reserved bits. The value read from a reserved bit is indeterminate.
PCA Module 4 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
PCA Module 3 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
PCA Module 2 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
PCA Module 1 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
PCA Module 0 interrupt flag. Set by hardware when a match or capture occurs.
Must be cleared by software.
5
5
-
1
(CCON)
Watchdog Timer Data/Reload
CCF4
4
4
SST89E54RD2A/RDA / SST89E58RD2A/RDA
28
CCF3
3
3
CCF2
2
2
CCF1
1
1
CCF0
FlashFlex MCU
0
0
S71339-02-000
Reset Value
Reset Value
00x00000b
00H
02/08