TS87C51RD2 ATMEL Corporation, TS87C51RD2 Datasheet - Page 61

• Manufacturer Part Number: TS87C51RD2
• Description: (TS8xC51Rx2) High Performance 8-bit Microcontroller
• Manufacturer: ATMEL Corporation

4188E–8051–08/06
4. Capacitance loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the V
5. Typicals are based on a limited number of samples and are not guaranteed. The values listed are at room temperature and
6. Under steady state (non-transient) conditions, I
7. For other values, please contact your sales office.
8. Operating I
and 3. The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins make 1 to 0
transitions during bus operation. In the worst cases (capacitive loading 100pF), the noise pulse on the ALE line may exceed
0.45V with maxi V
5V.
Maximum I
Maximum I
Port 0: 26 mA
Ports 1, 2, 3 and 4 and 5 when available: 15 mA
Maximum total I
If I
than the listed test conditions.
V
V
would be slightly higher if a crystal oscillator is used. Measurements are made with OTP products when possible, which is
the worst case.
SS
IH
OL
= V
+ 0.5 V,
exceeds the test condition, V
CC
- 0.5V; XTAL2 N.C.; EA = Port 0 = V
OL
OL
CC
per port pin: 10 mA
per 8-bit port:
is measured with all output pins disconnected; XTAL1 driven with T
OL
Figure 11-1. I
Figure 11-2. Operating I
OL
for all output pins: 71 mA
peak 0.6V. A Schmitt Trigger use is not necessary.
R e s e t = V s s a f t e r a h i g h p u l s e
d u r i n g a t l e a s t 2 4 c l o c k c y c l e s
CC
OL
CLOCK
SIGNAL
CLOCK
SIGNAL
may exceed the related specification. Pins are not guaranteed to sink current greater
Test Condition, under reset
(NC)
(NC)
V
CC
CC
CC
OL
; RST = V
Test Condition
must be externally limited as follows:
RST
XTAL2
XTAL1
V
RST
XTAL2
XTAL1
V
SS
SS
SS
V
V
EA
EA
. The internal ROM runs the code 80 FE (label: SJMP label). I
CC
CC
I
P0
I
P0
CC
CC
V
V
CC
CC
V
V
CC
CC
All other pins are disconnected.
All other pins are disconnected.
CLCH
, T
CHCL
AT/TS8xC51Rx2
= 5 ns (see Figure 11-5.), V
OL
s of ALE and Ports 1
IL
CC
61
=