W78E516DPG Nuvoton Technology Corporation of America, W78E516DPG Datasheet - Page 76

• Manufacturer Part Number: W78E516DPG
• Description: IC MCU 8-BIT 64K FLASH 44-PLCC
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E516DPG

• 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: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

Notes:
1. P0.0 − P0.7, P2.0 − P2.7 remain stable throughout entire memory cycle.
2. Memory access time is 3 T
3. Data have been latched internally prior to
4. " Δ " (due to buffer driving delay and wire loading) is 20 nS.
Data Read Cycle
Notes:
1. Data memory access time is 8 T
2. " Δ " (due to buffer driving delay and wire loading) is 20 nS.
Data Write Cycle
Note: " Δ " (due to buffer driving delay and wire loading) is 20 nS.
Port Access Cycle
Note: Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to
21.4 TIMING waveforms
ALE Low to WR Low
Data Valid to WR Low
Data Hold from WR High
WR Pulse Width
ALE Low to RD Low
Data Hold from RD High
Data Float from RD High
Port Input Setup to ALE Low
Port Input Hold from ALE Low
Port Output to ALE
Data Hold after PSEN High
Data Float after PSEN High
ALE Pulse Width
RD Low to Data Valid
RD Pulse Width
PSEN
PSEN Pulse Width
ALE, since it provides a convenient reference.
Low to Data Valid
PARAMETER
PARAMETER
ITEM
CP
.
CP
.
Preliminary W78E516D/W78E058D Data Sheet
PSEN
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
DAW
DAD
DWD
DWR
going high.
SYMBOL
SYMBOL
SYMBOL
PDA
PDH
PDZ
ALW
PSW
DAR
DDA
DDH
DDZ
DRD
PDS
PDH
PDA
- 76 -
3 T
1 T
1 T
6 T
1 T
0
1 T
-
0
0
2 T
3 T
3 T
-
0
0
6 T
MIN.
MIN.
MIN.
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
- Δ
- Δ
- Δ
- Δ
- Δ
- Δ
- Δ
- Δ
-
-
-
6 T
-
-
-
-
2 T
3 T
-
-
-
-
6 T
TYP.
TYP.
-
-
TYP.
CP
CP
CP
CP
3 T
4 T
2 T
2 T
-
3 T
-
-
-
2 T
1 T
1 T
-
-
-
MAX.
-
MAX.
-
MAX.
CP+
CP
CP
CP
CP
CP
CP
CP
+ Δ
Δ
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
UNIT
UNIT
UNIT
2
3
4
4
NOTES
1, 2
1
2