W78E052DDG Nuvoton Technology Corporation of America, W78E052DDG Datasheet - Page 29

• Manufacturer Part Number: W78E052DDG
• Description: IC MCU 8-BIT 8K FLASH 40-DIP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E052DDG

• Core Processor: 8052
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 36
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

Mnemonic: CHPCON
External Interrupt Control
Mnemonic: XICON
SFR program of address low
Bit
7
1
0
Bit:
BIT
7
6
5
4
3
2
1
0
Bit:
7
PX3
NAME
PX3
EX3
IE3
IT3
PX2
EX2
IE2
IT2
7
SFRAL.7
Name
SWRST
FBOOTSL
ENP
SWRST
6
6
EX3
SFRAL.6
FUNCTION
External interrupt 3 priority is higher if set this bit to 1
Enable External interrupt 3 if set this bit to 1
If IT3 = 1, IE3 is set/cleared automatically by hardware when interrupt is de-
tected/serviced
External interrupt 3 is falling-edge/low-level triggered when this bit is set/cleared
by software
External interrupt 2 priority is higher if set this to 1
Enable External interrupt 2 if set this bit to 1
If IT2 = 1, IE2 is set/cleared automatically by hardware when interrupt is de-
tected/serviced
External interrupt 2 is falling-edge/low-level triggered when this bit is set/cleared
by software
-
Function
When this bit is set to 1, and both FBOOTSL and ENP are set to 1. It will
enforce microcontroller reset to initial condition just like power on reset.
This action will re-boot the microcontroller and start to normal operation. To
read this bit can determine that the F02KBOOT mode is running.
Note: Software Reset only LDROM jump to APROM, APROM can’t soft-
ware reset to LDROM.
The Loader Program Location Select.
0: The Loader Program locates at the APROM flash memory bank.
1: The Loader Program locates at the LD flash memory bank.
FLASH EPROM Programming Enable.
1: Enable in-system programming mode. In this mode, erase, program and
0: Disable in-system programming mode. The on-chip flash memory is
read operations are achieved.
read-only.
5
IE3
5
SFRAL.5
-
W78E054D/W78E052D/W78E051D Data Sheet
4
4
IT3
SFRAL.4
-
- 29 -
3
PX2
3
SFRAL.3
-
Publication Release Date: Dec 29, 2009
2
2
SFRAL.2
EX2
-
FBOOTSL
1
IE2
1
SFRAL.1
Address: BFh
Address: C0h
Revision A09
0
0
SFRAL.0
ENP
IT2