參數(shù)資料
型號(hào): 935263208557
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, QFP-80
文件頁(yè)數(shù): 53/76頁(yè)
文件大小: 567K
代理商: 935263208557
Philips Semiconductors
Product specification
P83C557E4/P80C557E4/P89C557E4
Single-chip 8-bit microcontroller
1999 Mar 02
57
FEEPROM PROGRAMMING AND VERIFICATION CHARACTERISTICS
Tamb = –40 °C to +85 °C, VDD = 5 V ± 10%, VSS = 0 V (see Figure 53)
SYMBOL
PARAMETER
MIN
MAX
UNIT
1/tCLK
System clock frequency (standard oscillator)
4
6
MHz
tAVWL
Address setup to WE LOW
48tCLK
tWHAX
Address hold after WE HIGH
48tCLK
tDVWL
Data setup to WE LOW
48tCLK
tWHDX
Data hold after WE HIGH
48tCLK
tEHWL
P2.7 (ENABLE) HIGH to WE LOW
48tCLK
tWHEL
WE HIGH to P2.7 (ENABLE) LOW
48tCLK
tWLWHp
WE width (programming)
2.25
2.75
ms
tWLWHe
WE width (erase)
4.5
5.5
ms
tAVQV
Address to data valid
48tCLK
tELQV
P2.7 (ENABLE) Low to data valid
48tCLK
tEHQZ
Data float after P2.7 (ENABLE) HIGH
0
48tCLK
tEHWL
Figure 53. FEEPROM Programming/Erase and Verification Waveforms
PROGRAMMING*/Erase*
VERIFICATION*
ADDRESS (programming)
ADDRESS
DATA IN
(programing)
DATA OUT
tAVQV
tEHQZ
tELQV
tAVWL
tWHAX
tDVWL
tWHDX
P0.0–P0.7
ALE/WE
P2.7
ENABLE
* For ERASE conditions see Figure 50.
For PROGRAM conditions see Figure 51.
For VERIFY conditions see Figure 52.
tWHEL
tWLWHp
tWLWHe
P1.0–P1.7
P2.0–P2.5
P3.4
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